.back{
    display: inline-block;
    position: relative;
}

.back .icon{
    position: absolute;
    top: .3em;
    left: .5em;
}

.layui-input {
    outline:none;
    font-size: .3rem;
    padding-left: 2em;
    height: 2em;
    line-height: 2em;
    border-width: 1px;
    border-style: solid;
    background: rgba(29,183,182,.2);
    color: #eee;
    border-radius: 2px;
    border-color: #1db7b6;
}

