.tools {
  padding: 20px;
  background-color: #fff;
  border-radius: 5px;
  box-shadow: 0 0 5px #333;
}
.tools-title {
  color: #007fff;
  font-size: 18px;
  position: relative;
}
.tools-title::before,
.tools-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -10px;
  transform: translateY(-50%) scale(0.999);
  display: inline-block;
  width: 22%;
  height: 1px;
  background-color: #007fff;
  animation: aWidth 1.2s infinite linear;
}
.tools-title::after {
  bottom: -15px;
  animation-delay: 0.25s;
}
@-moz-keyframes aWidth {
  0% {
    width: 22%;
  }
  25% {
    width: 36%;
  }
  50% {
    width: 20%;
  }
  75% {
    width: 30%;
  }
  100% {
    width: 22%;
  }
}
@-webkit-keyframes aWidth {
  0% {
    width: 22%;
  }
  25% {
    width: 36%;
  }
  50% {
    width: 20%;
  }
  75% {
    width: 30%;
  }
  100% {
    width: 22%;
  }
}
@-o-keyframes aWidth {
  0% {
    width: 22%;
  }
  25% {
    width: 36%;
  }
  50% {
    width: 20%;
  }
  75% {
    width: 30%;
  }
  100% {
    width: 22%;
  }
}
@keyframes aWidth {
  0% {
    width: 22%;
  }
  25% {
    width: 36%;
  }
  50% {
    width: 20%;
  }
  75% {
    width: 30%;
  }
  100% {
    width: 22%;
  }
}
.tools-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-top: 15px;
}
.tools-list li {
  width: calc(50% - 8px);
  display: flex;
  padding: 10px;
  margin-top: 15px;
  border: 1px solid #ddd;
  border-radius: 5px;
  box-shadow: 2px 2px 5px #ccc;
}
.tools-list li:hover {
  box-shadow: 1px 1px 5px inset #ccc;
}
.tools-list li .tool-cover {
  width: 120px;
  height: 120px;
  border: 1px solid #ccc;
  object-fit: cover;
  -o-object-fit: cover;
}
.tools-list li .tool-info {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  margin-left: 10px;
}
.tools-list li .tool-info .tool-title {
  font-size: 16px;
  font-weight: bold;
}
.tools-list li .tool-info .tool-intro {
  margin-top: 5px;
  font-size: 14px;
  color: #666;
}
.tools-list li .tool-info .tool-link {
  font-size: 14px;
  color: #007fff;
  text-align: right;
  text-decoration: underline;
}