javascript - 如何强制元素的默认CSS

我有一个标准的复选框模板，它可以在一个简单的html页面上工作：
但是，在我的网页上，由于其他css样式的干扰，它没有呈现为复选框。
只有文本可见，没有复选框图标。无法在此处强制执行复选框行为。这可能是因为在我的css文件中，我已经检查了标签和输入的样式。但是，我想强制此标记的默认行为。

*, *:before, *:after {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html, body {
      height: 120vh;
    }

    body {
      font: 14px/1 'Open Sans', sans-serif;
      color: #555;
      background: #eee;
    }

    h1 {
      padding: 20px 0;
      font-weight: 100;
      text-align: center;
    }

    p {
      margin: 0 0 20px;
      line-height: 1.5;
    }

    main {
      min-width: 520px;
      /*max-width: 800px;*/
      padding: 50px;
      margin: 0 auto;
      background: #fff;
    }

    section {
      display: none;
      padding: 20px 0 0;
      border-top: 1px solid #ddd;
    }

    input {
      display: none;
    }

    label {
      display: inline-block;
      margin: 0 0 -1px;
      padding: 15px 25px;
      font-weight: 600;
      text-align: center;
      color: #bbb;
      border: 1px solid transparent;
    }

    label:before {
      font-family: fontawesome;
      font-weight: normal;
      margin-right: 10px;
    }

    label[for*='1']:before { content: '\f1cb'; }
    label[for*='2']:before { content: '\f17d'; }
    label[for*='3']:before { content: '\f16b'; }
    label[for*='4']:before { content: '\f1a9'; }

    label:hover {
      color: #888;
      cursor: pointer;
    }

    input:checked + label {
      color: #555;
      border: 1px solid #ddd;
      border-top: 2px solid orange;
      border-bottom: 1px solid #fff;
    }

    #tab1:checked ~ #content1,
    #tab2:checked ~ #content4,
    #tab3:checked ~ #content2,
    #tab4:checked ~ #content3 {
      display: block;
    }

    @media screen and (max-width: 650px) {
      label {
        font-size: 0;
      }
      label:before {
        margin: 0;
        font-size: 18px;
      }
    }

    @media screen and (max-width: 600px) {
      label {
        padding: 15px;
      }
    }

    /*Table */
    .table-wrapper {
    	-webkit-overflow-scrolling: touch;
    	overflow-x: auto;
    }

    table {
    	margin: 0 0 2rem 0;
    	width: 100%;
    }

    	table tbody tr {
    		border: solid 1px;
    		border-left: 0;
    		border-right: 0;
    	}

    	table td {
    		padding: 0.75rem 0.75rem;
    	}

    	table th {
    		font-size: 0.9rem;
    		font-weight: 700;
    		padding: 0 0.75rem 0.75rem 0.75rem;
    		text-align: left;
    	}

    	table thead {
    		border-bottom: solid 2px;
    	}

    	table tfoot {
    		border-top: solid 2px;
    	}

    	table.alt {
    		border-collapse: separate;
    	}

    		table.alt tbody tr td {
    			border: solid 1px;
    			border-left-width: 0;
    			border-top-width: 0;
    		}

    			table.alt tbody tr td:first-child {
    				border-left-width: 1px;
    			}

    		table.alt tbody tr:first-child td {
    			border-top-width: 1px;
    		}

    		table.alt thead {
    			border-bottom: 0;
    		}

    		table.alt tfoot {
    			border-top: 0;
    		}

    table tbody tr {
    	border-color: rgba(144, 144, 144, 0.25);
    }

    	table tbody tr:nth-child(2n + 1) {
    		background-color: rgba(144, 144, 144, 0.075);
    	}

    table th {
    	color: #555;
    }

    table thead {
    	border-bottom-color: rgba(144, 144, 144, 0.25);
    }

    table tfoot {
    	border-top-color: rgba(144, 144, 144, 0.25);
    }

    table.alt tbody tr td {
    	border-color: rgba(144, 144, 144, 0.25);
    }

<form>
  <input type="checkbox" name="vehicle" value="Bike"> I have a bike<br>
  <input type="checkbox" name="vehicle" value="Car" checked> I have a car<br>
  <input type="submit" value="Submit">
</form>

请建议。
如果有助于：

最佳答案

覆盖（或删除（如果可能的话）

input {
    display: none;
}

*, *:before, *:after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 120vh;
}

body {
  font: 14px/1 'Open Sans', sans-serif;
  color: #555;
  background: #eee;
}

h1 {
  padding: 20px 0;
  font-weight: 100;
  text-align: center;
}

p {
  margin: 0 0 20px;
  line-height: 1.5;
}

main {
  min-width: 520px;
  /*max-width: 800px;*/
  padding: 50px;
  margin: 0 auto;
  background: #fff;
}

section {
  display: none;
  padding: 20px 0 0;
  border-top: 1px solid #ddd;
}

input {
  display: none;
}

label {
  display: inline-block;
  margin: 0 0 -1px;
  padding: 15px 25px;
  font-weight: 600;
  text-align: center;
  color: #bbb;
  border: 1px solid transparent;
}

label:before {
  font-family: fontawesome;
  font-weight: normal;
  margin-right: 10px;
}

label[for*='1']:before { content: '\f1cb'; }
label[for*='2']:before { content: '\f17d'; }
label[for*='3']:before { content: '\f16b'; }
label[for*='4']:before { content: '\f1a9'; }

label:hover {
  color: #888;
  cursor: pointer;
}

input:checked + label {
  color: #555;
  border: 1px solid #ddd;
  border-top: 2px solid orange;
  border-bottom: 1px solid #fff;
}

#tab1:checked ~ #content1,
#tab2:checked ~ #content4,
#tab3:checked ~ #content2,
#tab4:checked ~ #content3 {
  display: block;
}

@media screen and (max-width: 650px) {
  label {
    font-size: 0;
  }
  label:before {
    margin: 0;
    font-size: 18px;
  }
}

@media screen and (max-width: 600px) {
  label {
    padding: 15px;
  }
}

/*Table */
.table-wrapper {
    -webkit-overflow-scrolling: touch;
    overflow-x: auto;
}

table {
    margin: 0 0 2rem 0;
    width: 100%;
}

    table tbody tr {
        border: solid 1px;
        border-left: 0;
        border-right: 0;
    }

    table td {
        padding: 0.75rem 0.75rem;
    }

    table th {
        font-size: 0.9rem;
        font-weight: 700;
        padding: 0 0.75rem 0.75rem 0.75rem;
        text-align: left;
    }

    table thead {
        border-bottom: solid 2px;
    }

    table tfoot {
        border-top: solid 2px;
    }

    table.alt {
        border-collapse: separate;
    }

        table.alt tbody tr td {
            border: solid 1px;
            border-left-width: 0;
            border-top-width: 0;
        }

            table.alt tbody tr td:first-child {
                border-left-width: 1px;
            }

        table.alt tbody tr:first-child td {
            border-top-width: 1px;
        }

        table.alt thead {
            border-bottom: 0;
        }

        table.alt tfoot {
            border-top: 0;
        }

table tbody tr {
    border-color: rgba(144, 144, 144, 0.25);
}

    table tbody tr:nth-child(2n + 1) {
        background-color: rgba(144, 144, 144, 0.075);
    }

table th {
    color: #555;
}

table thead {
    border-bottom-color: rgba(144, 144, 144, 0.25);
}

table tfoot {
    border-top-color: rgba(144, 144, 144, 0.25);
}

table.alt tbody tr td {
    border-color: rgba(144, 144, 144, 0.25);
}

/* ADD THIS */

input {
  display: block!important;
}

<form>
  <input type="checkbox" name="vehicle" value="Bike"> I have a bike<br>
  <input type="checkbox" name="vehicle" value="Car" checked> I have a car<br>
  <input type="submit" value="Submit">
</form>

关于javascript - 如何强制元素的默认CSS，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/51354947/