悬浮按钮css

.floating-button {

color: #fff;

position: absolute;

right: 16px;

bottom: 88px;

width: 56px;

height: 56px;

border-radius: 50%;

z-index: 1500;

overflow: hidden;

-webkit-transition-duration: 300ms;

transition-duration: 300ms;

box-shadow: 0 10px 20px rgba(0, 0, 0, .19), 0 6px 6px rgba(0, 0, 0, .23);

display: -webkit-box;

display: -ms-flexbox;

display: -webkit-flex;

display: flex;

-webkit-box-align: center;

-ms-flex-align: center;

-webkit-align-items: center;

align-items: center;

-webkit-box-pack: center;

-ms-flex-pack: center;

-webkit-justify-content: center;

justify-content: center;

background-color: #2196f3;

}