src/style/close.less
.@{prefix-cls}-close {
float: right;
font-size: 21px;
font-weight: bold;
line-height: 1;
color: @blackColor;
text-shadow: 0 1px 0 @whiteColor;
opacity: .2;
outline: none;
&:hover,
&:focus {
color: @blackColor;
text-decoration: none;
cursor: pointer;
opacity: .5;
}
}
button.@{prefix-cls}-close {
-webkit-appearance: none;
padding: 0;
cursor: pointer;
background: transparent;
border: 0;
}