/* 文字渐变遮罩 */

.mask {
  background-color: #252525;
  color: #252525;
  transition: color 0.5s;
  display: inline-block;
}
.mask:hover {
  color: #ffffff;
}

/* END 文字渐变遮罩 */

/* 页脚footer */
/* 渐变色滚动动画 */
@-webkit-keyframes Gradient {
  0% {
    background-position: 0 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0 50%;
  }
}

@-moz-keyframes Gradient {
  0% {
    background-position: 0 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0 50%;
  }
}

@keyframes Gradient {
  0% {
    background-position: 0 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0 50%;
  }
}
#footer {
  background: linear-gradient(-45deg, #ee7752, #ce3e75, #23a6d5, #23d5ab);
  background-size: 400% 400%;
  -webkit-animation: Gradient 10s ease infinite;
  -moz-animation: Gradient 10s ease infinite;
  animation: Gradient 10s ease infinite;
  -o-user-select: none;
  -ms-user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}
#footer:before {
  background-color: rgba(0, 0, 0, 0);
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 13px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background-color: rgba(73, 177, 245, 0.2);
  border-radius: 2em;
}

::-webkit-scrollbar-thumb {
  background-color: #49b1f5;
  background-image: -webkit-linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.4) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.4) 50%,
    rgba(255, 255, 255, 0.4) 75%,
    transparent 75%,
    transparent
  );
  border-radius: 2em;
}

::-webkit-scrollbar-corner {
  background-color: transparent;
}

::-moz-selection {
  color: #fff;
  background-color: #49b1f5;
}