在IE和Firefox中，添加300个选项以选择中断Chrome浏览器中的CSS布局可以正常工作。当删除最后一个选项时，布局还是可以的。没有任何线索可能导致这种情况。有人有主意吗？谢谢
在这里，您有代码片段，在中设置了最后一个选项，然后布局就如预期的那样。
<style>
.tekst {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 10px;
color: #333333;
font-weight: normal;
}
</style>
<table>
<tr>
<td>
<b>Actual:</b>
<select class="tekst" name="cboUsers" id="users" onchange="verzend(this.form);" style="width: 200px">
<option style="background-color: #c71444; color: #ffffff">Location 0</option>
<option value="61">Name 0</option>
<option style="background-color: #c71444; color: #ffffff">Location 1</option>
<option value="1110">Name 1</option>
<option value="969">Name 2</option>
<option value="804">Name 3</option>
<option value="789">Name 4</option>
<option value="706">Name 5</option>
<option value="482">Name 6</option>
<option value="493">Name 7</option>
<option value="502">Name 8</option>
<option value="537">Name 9</option>
<option value="555">Name 10</option>
<option value="800">Name 11</option>
<option value="997">Name 12</option>
<option value="474">Name 13</option>
<option value="993">Name 14</option>
<option value="722">Name 15</option>
<option value="739">Name 16</option>
<option value="740">Name 17</option>
<option value="601">Name 18</option>
<option value="961">Name 19</option>
<option value="779">Name 20</option>
<option value="543">Name 21</option>
<option style="background-color: #c71444; color: #ffffff">Location 22</option>
<option value="602">Name 22</option>
<option value="308">Name 23</option>
<option value="309">Name 24</option>
<option value="321">Name 25</option>
<option value="801">Name 26</option>
<option value="1004">Name 27</option>
<option value="1077">Name 28</option>
<option value="959">Name 29</option>
<option value="927">Name 30</option>
<option value="994">Name 31</option>
<option value="302">Name 32</option>
<option value="83">Name 33</option>
<option value="913">Name 34</option>
<option value="962">Name 35</option>
<option value="1041">Name 36</option>
<option style="background-color: #c71444; color: #ffffff">Location 37</option>
<option value="841">Name 37</option>
<option value="802">Name 38</option>
<option value="909">Name 39</option>
<option value="707">Name 40</option>
<option value="719">Name 41</option>
<option value="695">Name 42</option>
<option value="914">Name 43</option>
<option style="background-color: #c71444; color: #ffffff">Location 44</option>
<option value="60">Name 44</option>
<option style="background-color: #c71444; color: #ffffff">Location 45</option>
<option value="62">Name 45</option>
<option style="background-color: #c71444; color: #ffffff">Location 46</option>
<option value="63">Name 46</option>
<option style="background-color: #c71444; color: #ffffff">Location 47</option>
<option value="1016">Name 47</option>
<option style="background-color: #c71444; color: #ffffff">Location 48</option>
<option value="1019">Name 48</option>
<option value="1031">Name 49</option>
<option value="1011">Name 50</option>
<option value="1018">Name 51</option>
<option value="1017">Name 52</option>
<option style="background-color: #c71444; color: #ffffff">Location 53</option>
<option value="937">Name 53</option>
<option style="background-color: #c71444; color: #ffffff">Location 54</option>
<option value="1109">Name 54</option>
<option value="905">Name 55</option>
<option value="137">Name 56</option>
<option style="background-color: #c71444; color: #ffffff">Location 57</option>
<option value="64">Name 57</option>
<option value="529">Name 58</option>
<option style="background-color: #c71444; color: #ffffff">Location 59</option>
<option value="565">Name 59</option>
<option style="background-color: #c71444; color: #ffffff">Location 60</option>
<option value="65">Name 60</option>
<option style="background-color: #c71444; color: #ffffff">Location 61</option>
<option value="66">Name 61</option>
<option value="442">Name 62</option>
<option style="background-color: #c71444; color: #ffffff">Location 63</option>
<option value="1058">Name 63</option>
<option value="918">Name 64</option>
<option value="890">Name 65</option>
<option value="886">Name 66</option>
<option value="948">Name 67</option>
<option value="911">Name 68</option>
<option value="1105">Name 69</option>
<option value="887">Name 70</option>
<option style="background-color: #c71444; color: #ffffff">Location 71</option>
<option value="67">Name 71</option>
<option style="background-color: #c71444; color: #ffffff">Location 72</option>
<option value="68">Name 72</option>
<option style="background-color: #c71444; color: #ffffff">Location 73</option>
<option value="69">Name 73</option>
<option value="367">Name 74</option>
<option style="background-color: #c71444; color: #ffffff">Location 75</option>
<option value="396">Name 75</option>
<option value="364">Name 76</option>
<option value="70">Name 77</option>
<option value="446">Name 78</option>
<option value="790">Name 79</option>
<option value="358">Name 80</option>
<option value="472">Name 81</option>
<option value="359">Name 82</option>
<option value="451">Name 83</option>
<option value="457">Name 84</option>
<option value="467">Name 85</option>
<option value="667">Name 86</option>
<option value="456">Name 87</option>
<option value="433">Name 88</option>
<option value="735">Name 89</option>
<option value="837">Name 90</option>
<option value="450">Name 91</option>
<option value="581">Name 92</option>
<option style="background-color: #c71444; color: #ffffff">Location 93</option>
<option value="71">Name 93</option>
<option value="298">Name 94</option>
<option value="297">Name 95</option>
<option value="270">Name 96</option>
<option value="369">Name 97</option>
<option style="background-color: #c71444; color: #ffffff">Location 98</option>
<option value="72">Name 98</option>
<option style="background-color: #c71444; color: #ffffff">Location 99</option>
<option value="73">Name 99</option>
<option style="background-color: #c71444; color: #ffffff">Location 100</option>
<option value="74">Name 100</option>
<option style="background-color: #c71444; color: #ffffff">Location 101</option>
<option value="593">Name 101</option>
<option value="566">Name 102</option>
<option value="1039">Name 103</option>
<option style="background-color: #c71444; color: #ffffff">Location 104</option>
<option value="498">Name 104</option>
<option value="724">Name 105</option>
<option value="512">Name 106</option>
<option value="508">Name 107</option>
<option value="755">Name 108</option>
<option value="484">Name 109</option>
<option value="497">Name 110</option>
<option value="76">Name 111</option>
<option value="253">Name 112</option>
<option value="934">Name 113</option>
<option value="923">Name 114</option>
<option value="666">Name 115</option>
<option value="424">Name 116</option>
<option value="374">Name 117</option>
<option value="612">Name 118</option>
<option value="303">Name 119</option>
<option value="588">Name 120</option>
<option value="402">Name 121</option>
<option value="919">Name 122</option>
<option style="background-color: #c71444; color: #ffffff">Location 123</option>
<option value="1005">Name 123</option>
<option value="756">Name 124</option>
<option value="1102">Name 125</option>
<option value="1060">Name 126</option>
<option value="509">Name 127</option>
<option value="501">Name 128</option>
<option value="840">Name 129</option>
<option value="1040">Name 130</option>
<option value="783">Name 131</option>
<option value="336">Name 132</option>
<option value="935">Name 133</option>
<option value="312">Name 134</option>
<option value="915">Name 135</option>
<option value="1101">Name 136</option>
<option value="148">Name 137</option>
<option value="730">Name 138</option>
<option value="924">Name 139</option>
<option value="654">Name 140</option>
<option value="1100">Name 141</option>
<option value="920">Name 142</option>
<option style="background-color: #c71444; color: #ffffff">Location 143</option>
<option value="702">Name 143</option>
<option value="246">Name 144</option>
<option value="549">Name 145</option>
<option value="1006">Name 146</option>
<option value="757">Name 147</option>
<option value="620">Name 148</option>
<option value="681">Name 149</option>
<option value="401">Name 150</option>
<option value="245">Name 151</option>
<option value="653">Name 152</option>
<option value="403">Name 153</option>
<option value="373">Name 154</option>
<option value="481">Name 155</option>
<option value="652">Name 156</option>
<option value="619">Name 157</option>
<option value="968">Name 158</option>
<option value="784">Name 159</option>
<option value="845">Name 160</option>
<option value="427">Name 161</option>
<option value="161">Name 162</option>
<option value="925">Name 163</option>
<option value="560">Name 164</option>
<option value="872">Name 165</option>
<option value="778">Name 166</option>
<option value="468">Name 167</option>
<option value="796">Name 168</option>
<option value="624">Name 169</option>
<option value="921">Name 170</option>
<option style="background-color: #c71444; color: #ffffff">Location 171</option>
<option value="75">Name 171</option>
<option value="947">Name 172</option>
<option value="936">Name 173</option>
<option value="672">Name 174</option>
<option value="732">Name 175</option>
<option value="746">Name 176</option>
<option value="1020">Name 177</option>
<option value="899">Name 178</option>
<option value="337">Name 179</option>
<option value="405">Name 180</option>
<option value="552">Name 181</option>
<option value="330">Name 182</option>
<option value="510">Name 183</option>
<option value="749">Name 184</option>
<option value="703">Name 185</option>
<option value="973">Name 186</option>
<option value="408">Name 187</option>
<option value="764">Name 188</option>
<option value="844">Name 189</option>
<option value="776">Name 190</option>
<option value="637">Name 191</option>
<option value="676">Name 192</option>
<option value="665">Name 193</option>
<option value="926">Name 194</option>
<option value="1036">Name 195</option>
<option value="889">Name 196</option>
<option value="996">Name 197</option>
<option value="747">Name 198</option>
<option value="710">Name 199</option>
<option value="331">Name 200</option>
<option value="952">Name 201</option>
<option value="518">Name 202</option>
<option value="513">Name 203</option>
<option value="738">Name 204</option>
<option value="422">Name 205</option>
<option value="922">Name 206</option>
<option style="background-color: #c71444; color: #ffffff">Location 207</option>
<option value="1045">Name 207</option>
<option value="77">Name 208</option>
<option value="1095">Name 209</option>
<option style="background-color: #c71444; color: #ffffff">Location 210</option>
<option value="567">Name 210</option>
<option style="background-color: #c71444; color: #ffffff">Location 211</option>
<option value="687">Name 211</option>
<option value="78">Name 212</option>
<option value="258">Name 213</option>
<option value="553">Name 214</option>
<option value="941">Name 215</option>
<option value="500">Name 216</option>
<option value="313">Name 217</option>
<option value="256">Name 218</option>
<option value="628">Name 219</option>
<option value="377">Name 220</option>
<option value="663">Name 221</option>
<option style="background-color: #c71444; color: #ffffff">Location 222</option>
<option value="280">Name 222</option>
<option value="759">Name 223</option>
<option value="851">Name 224</option>
<option value="514">Name 225</option>
<option value="415">Name 226</option>
<option value="829">Name 227</option>
<option value="418">Name 228</option>
<option value="728">Name 229</option>
<option value="661">Name 230</option>
<option value="662">Name 231</option>
<option value="846">Name 232</option>
<option value="449">Name 233</option>
<option value="144">Name 234</option>
<option value="361">Name 235</option>
<option value="587">Name 236</option>
<option value="281">Name 237</option>
<option value="455">Name 238</option>
<option value="831">Name 239</option>
<option value="452">Name 240</option>
<option value="492">Name 241</option>
<option value="767">Name 242</option>
<option value="490">Name 243</option>
<option value="275">Name 244</option>
<option value="648">Name 245</option>
<option style="background-color: #c71444; color: #ffffff">Location 246</option>
<option value="655">Name 246</option>
<option value="282">Name 247</option>
<option value="218">Name 248</option>
<option value="255">Name 249</option>
<option value="673">Name 250</option>
<option value="907">Name 251</option>
<option value="638">Name 252</option>
<option value="627">Name 253</option>
<option style="background-color: #c71444; color: #ffffff">Location 254</option>
<option value="811">Name 254</option>
<option value="824">Name 255</option>
<option value="988">Name 256</option>
<option value="812">Name 257</option>
<option value="404">Name 258</option>
<option value="813">Name 259</option>
<option value="991">Name 260</option>
<option value="810">Name 261</option>
<option value="809">Name 262</option>
<option value="985">Name 263</option>
<option style="background-color: #c71444; color: #ffffff">Location 264</option>
<option value="370">Name 264</option>
</select>
</td>
</tr>
<tr>
<td>
<b>Expected:</b>
<select class="tekst" name="cboUsers" id="users" onchange="verzend(this.form);" style="width: 200px">
<option style="background-color: #c71444; color: #ffffff">Location 0</option>
<option value="61">Name 0</option>
<option style="background-color: #c71444; color: #ffffff">Location 1</option>
<option value="1110">Name 1</option>
<option value="969">Name 2</option>
<option value="804">Name 3</option>
<option value="789">Name 4</option>
<option value="706">Name 5</option>
<option value="482">Name 6</option>
<option value="493">Name 7</option>
<option value="502">Name 8</option>
<option value="537">Name 9</option>
<option value="555">Name 10</option>
<option value="800">Name 11</option>
<option value="997">Name 12</option>
<option value="474">Name 13</option>
<option value="993">Name 14</option>
<option value="722">Name 15</option>
<option value="739">Name 16</option>
<option value="740">Name 17</option>
<option value="601">Name 18</option>
<option value="961">Name 19</option>
<option value="779">Name 20</option>
<option value="543">Name 21</option>
<option style="background-color: #c71444; color: #ffffff">Location 22</option>
<option value="602">Name 22</option>
<option value="308">Name 23</option>
<option value="309">Name 24</option>
<option value="321">Name 25</option>
<option value="801">Name 26</option>
<option value="1004">Name 27</option>
<option value="1077">Name 28</option>
<option value="959">Name 29</option>
<option value="927">Name 30</option>
<option value="994">Name 31</option>
<option value="302">Name 32</option>
<option value="83">Name 33</option>
<option value="913">Name 34</option>
<option value="962">Name 35</option>
<option value="1041">Name 36</option>
<option style="background-color: #c71444; color: #ffffff">Location 37</option>
<option value="841">Name 37</option>
<option value="802">Name 38</option>
<option value="909">Name 39</option>
<option value="707">Name 40</option>
<option value="719">Name 41</option>
<option value="695">Name 42</option>
<option value="914">Name 43</option>
<option style="background-color: #c71444; color: #ffffff">Location 44</option>
<option value="60">Name 44</option>
<option style="background-color: #c71444; color: #ffffff">Location 45</option>
<option value="62">Name 45</option>
<option style="background-color: #c71444; color: #ffffff">Location 46</option>
<option value="63">Name 46</option>
<option style="background-color: #c71444; color: #ffffff">Location 47</option>
<option value="1016">Name 47</option>
<option style="background-color: #c71444; color: #ffffff">Location 48</option>
<option value="1019">Name 48</option>
<option value="1031">Name 49</option>
<option value="1011">Name 50</option>
<option value="1018">Name 51</option>
<option value="1017">Name 52</option>
<option style="background-color: #c71444; color: #ffffff">Location 53</option>
<option value="937">Name 53</option>
<option style="background-color: #c71444; color: #ffffff">Location 54</option>
<option value="1109">Name 54</option>
<option value="905">Name 55</option>
<option value="137">Name 56</option>
<option style="background-color: #c71444; color: #ffffff">Location 57</option>
<option value="64">Name 57</option>
<option value="529">Name 58</option>
<option style="background-color: #c71444; color: #ffffff">Location 59</option>
<option value="565">Name 59</option>
<option style="background-color: #c71444; color: #ffffff">Location 60</option>
<option value="65">Name 60</option>
<option style="background-color: #c71444; color: #ffffff">Location 61</option>
<option value="66">Name 61</option>
<option value="442">Name 62</option>
<option style="background-color: #c71444; color: #ffffff">Location 63</option>
<option value="1058">Name 63</option>
<option value="918">Name 64</option>
<option value="890">Name 65</option>
<option value="886">Name 66</option>
<option value="948">Name 67</option>
<option value="911">Name 68</option>
<option value="1105">Name 69</option>
<option value="887">Name 70</option>
<option style="background-color: #c71444; color: #ffffff">Location 71</option>
<option value="67">Name 71</option>
<option style="background-color: #c71444; color: #ffffff">Location 72</option>
<option value="68">Name 72</option>
<option style="background-color: #c71444; color: #ffffff">Location 73</option>
<option value="69">Name 73</option>
<option value="367">Name 74</option>
<option style="background-color: #c71444; color: #ffffff">Location 75</option>
<option value="396">Name 75</option>
<option value="364">Name 76</option>
<option value="70">Name 77</option>
<option value="446">Name 78</option>
<option value="790">Name 79</option>
<option value="358">Name 80</option>
<option value="472">Name 81</option>
<option value="359">Name 82</option>
<option value="451">Name 83</option>
<option value="457">Name 84</option>
<option value="467">Name 85</option>
<option value="667">Name 86</option>
<option value="456">Name 87</option>
<option value="433">Name 88</option>
<option value="735">Name 89</option>
<option value="837">Name 90</option>
<option value="450">Name 91</option>
<option value="581">Name 92</option>
<option style="background-color: #c71444; color: #ffffff">Location 93</option>
<option value="71">Name 93</option>
<option value="298">Name 94</option>
<option value="297">Name 95</option>
<option value="270">Name 96</option>
<option value="369">Name 97</option>
<option style="background-color: #c71444; color: #ffffff">Location 98</option>
<option value="72">Name 98</option>
<option style="background-color: #c71444; color: #ffffff">Location 99</option>
<option value="73">Name 99</option>
<option style="background-color: #c71444; color: #ffffff">Location 100</option>
<option value="74">Name 100</option>
<option style="background-color: #c71444; color: #ffffff">Location 101</option>
<option value="593">Name 101</option>
<option value="566">Name 102</option>
<option value="1039">Name 103</option>
<option style="background-color: #c71444; color: #ffffff">Location 104</option>
<option value="498">Name 104</option>
<option value="724">Name 105</option>
<option value="512">Name 106</option>
<option value="508">Name 107</option>
<option value="755">Name 108</option>
<option value="484">Name 109</option>
<option value="497">Name 110</option>
<option value="76">Name 111</option>
<option value="253">Name 112</option>
<option value="934">Name 113</option>
<option value="923">Name 114</option>
<option value="666">Name 115</option>
<option value="424">Name 116</option>
<option value="374">Name 117</option>
<option value="612">Name 118</option>
<option value="303">Name 119</option>
<option value="588">Name 120</option>
<option value="402">Name 121</option>
<option value="919">Name 122</option>
<option style="background-color: #c71444; color: #ffffff">Location 123</option>
<option value="1005">Name 123</option>
<option value="756">Name 124</option>
<option value="1102">Name 125</option>
<option value="1060">Name 126</option>
<option value="509">Name 127</option>
<option value="501">Name 128</option>
<option value="840">Name 129</option>
<option value="1040">Name 130</option>
<option value="783">Name 131</option>
<option value="336">Name 132</option>
<option value="935">Name 133</option>
<option value="312">Name 134</option>
<option value="915">Name 135</option>
<option value="1101">Name 136</option>
<option value="148">Name 137</option>
<option value="730">Name 138</option>
<option value="924">Name 139</option>
<option value="654">Name 140</option>
<option value="1100">Name 141</option>
<option value="920">Name 142</option>
<option style="background-color: #c71444; color: #ffffff">Location 143</option>
<option value="702">Name 143</option>
<option value="246">Name 144</option>
<option value="549">Name 145</option>
<option value="1006">Name 146</option>
<option value="757">Name 147</option>
<option value="620">Name 148</option>
<option value="681">Name 149</option>
<option value="401">Name 150</option>
<option value="245">Name 151</option>
<option value="653">Name 152</option>
<option value="403">Name 153</option>
<option value="373">Name 154</option>
<option value="481">Name 155</option>
<option value="652">Name 156</option>
<option value="619">Name 157</option>
<option value="968">Name 158</option>
<option value="784">Name 159</option>
<option value="845">Name 160</option>
<option value="427">Name 161</option>
<option value="161">Name 162</option>
<option value="925">Name 163</option>
<option value="560">Name 164</option>
<option value="872">Name 165</option>
<option value="778">Name 166</option>
<option value="468">Name 167</option>
<option value="796">Name 168</option>
<option value="624">Name 169</option>
</select>
</td>
</tr>
</table>最佳答案
该问题已在Chrome（版本46.0.2490.86）中修复。无法再复制它。在代码段中，期望值和实际值相等。