好用的6个css方法

img {
    filter: grayscale(100%);
}

.nav li:not(:last-child) {
    border-right: 1px solid #333;
}

html, body {
    height: 100%;
    margin: 0;
}
body {
    align-items: center;
    display: flex;
}

.calendar {
    table-layout: fixed;
}

h1{
    position: relative;
}
h1:after{
    content: ‘与h1内容相同文字‘;
    z-index: 10;
    color: #e3e3e3;
    position: absolute;
    top: 0;
    left: 0;
    -webkit-mask-image: -webkit-gradient(linear, left top, left bottom, from(rgba(0,0,0,0)), color-stop(50%, rgba(0,0,0,1)), to(rgba(0,0,0,0)));
}

.disabled { 
    pointer-events: none; 
}