overflow: hidden;text-overflow: ellipsis;white-space: nowrap; 

p{position:relative;line-height:1.4em;height:4.2em;/* 3 倍line-height  多少倍就是多少行*/overflow:hidden;}.p::after {content:"...";font-weight:bold;position:absolute;bottom:0;right:0;padding:0 20px 1px 45px;background: -webkit-linear-gradient(left, transparent, #fff 55%);background: -o-linear-gradient(right, transparent, #fff 55%);background: -moz-linear-gradient(right, transparent, #fff 55%);background: linear-gradient(to right, transparent, #fff 55%);}