/*修改按钮线条宽度*/
.button.is-outline, input[type=button].is-outline, input[type=reset].is-outline, input[type=submit].is-outline {
    background-color: transparent;
    border: 1px solid;
}

/*修复图标和文字偏离*/
.button i, button i {
    top: 0;
}

.button.is-underline:before {
    background-color: currentColor;
    bottom: 0;
    content: "";
    height: 1px;
    left: 0;
    opacity: .3;
    position: absolute;
    transition: all .3s;
    width: 100%;
}