为什么我的汉堡包图标不起作用？

Question

https://codepen.io/anon/pen/QNqgMo

为什么顶线没有动画效果？有人能告诉我代码有什么问题吗？

谢谢

#hamburger-icon.active .line-1 {
transform: translateY(25px) translateX(0) rotate(45deg);
-webkit-transform: translateY(25px) translateX(0) rotate(45deg);
-moz-transform: translateY(25px) translateX(0) rotate(45deg);
}
#hamburger-icon.active .line-2 {
opacity: 0;
}
#hamburger-icon.active .line-3 {
transform: translateY(-10px) translateX(0) rotate(-45deg);
-webkit-transform: translateY(-10px) translateX(0) rotate(-45deg);
-moz-transform: translateY(-10px) translateX(0) rotate(-45deg);

Answer 1

这就是了：

See this code

#hamburger-icon {
  position: absolute;
  top: 25px;
  left: 25px;
  height: 27px;
  width: 50px;
  cursor: pointer;
  display: block;


}

#hamburger-icon .line {

  position: absolute;
  display: block;
  background: #c8c8c8;
  width: 22px;
  height: 2px;
  left: 0;
  transition: all 0.4s;
  -webkit-transition: all 0.4s;
  -moz-transition: all 0.4s;

 }

  #hamburger-icon .line.line-1 {
    top: 0px;
  }

  #hamburger-icon .line.line-2 {
    top: 7px;
  }

  #hamburger-icon .line.line-3 {
    top: 14px;
  }


#hamburger-icon.active .line-1 {
  transform: translateY(-10px) translateX(0) rotate(45deg);
  -webkit-transform: translateY(-10px) translateX(0) rotate(45deg);
  -moz-transform: translateY(-10px) translateX(0) rotate(45deg);
}
#hamburger-icon.active .line-2 {
  opacity: 0;
}
#hamburger-icon.active .line-3 {
  transform: translateY(-10px) translateX(0) rotate(-45deg);
  -webkit-transform: translateY(-10px) translateX(0) rotate(-45deg);
  -moz-transform: translateY(-10px) translateX(0) rotate(-45deg);
}

您在代码中添加了太多的括号，因此它无法正常工作

Answer 2

后面有一个额外的括号

#hamburger-icon .line.line-3 {
    top: 14px;
}

只需删除它，您的代码就会按预期工作

#hamburger-icon {
  position: absolute;
  top: 25px;
  left: 25px;
  height: 27px;
  width: 50px;
  cursor: pointer;
  display: block;


}

#hamburger-icon .line {

  position: absolute;
  display: block;
  background: #c8c8c8;
  width: 22px;
  height: 2px;
  left: 0;
  transition: all 0.4s;
  -webkit-transition: all 0.4s;
  -moz-transition: all 0.4s;

 }

  #hamburger-icon .line.line-1 {
    top: 0px;
  }

  #hamburger-icon .line.line-2 {
    top: 7px;
  }

  #hamburger-icon .line.line-3 {
    top: 14px;
  }



#hamburger-icon.active .line-1 {
  transform: translateY(25px) translateX(0) rotate(45deg);
  -webkit-transform: translateY(25px) translateX(0) rotate(45deg);
  -moz-transform: translateY(25px) translateX(0) rotate(45deg);
}
#hamburger-icon.active .line-2 {
  opacity: 0;
}
#hamburger-icon.active .line-3 {
  transform: translateY(-10px) translateX(0) rotate(-45deg);
  -webkit-transform: translateY(-10px) translateX(0) rotate(-45deg);
  -moz-transform: translateY(-10px) translateX(0) rotate(-45deg);
}