常用偏门CSS汇总

placeholder字体颜色怎么设置修改

::-webkit-input-placeholder {
  color: red;
}
::-moz-placeholder {
  color: red;
}
::-ms-placeholder {
  color: red;
}

flex布局最后一行未填充满居左排列问题

假设外层容器class为spec-row，每行排3个

.spec-row {
    width: 100%;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}
.spec-row:after {
    content: '';
    width: calc(100% / 3);
    height: 0;
    visibility: hidden;
}