.toph5{
    display: none;
}


@media screen and (max-width: 768px) {
    .toph5{
        display: block;
        width: 100%;
        height: 62px;
        /* background-color: pink; */
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-left: 10px;
        padding-right: 10px;
    }
    .leftlogo img{
        
        height: 150px;
    }
    .top{
        display: none;
    }
}
h2 {
    vertical-align: center;
    text-align: center;
  }
  
  html, body {
    margin: 0;
    height: 100%;
  }
  
  * {
    font-family: "Raleway";
    box-sizing: border-box;
  }
  
  .top-nav {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    background-color: #00BAF0;
    background: linear-gradient(to left, #f46b45, #eea849);
    /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    color: #FFF;
    height: 50px;
    padding: 1em;
  }
  
  .menu {
    display: flex;
    flex-direction: row;
    list-style-type: none;
    margin: 0;
    padding: 0;
  }
  
  .menu > li {
    margin: 0 1rem;
    overflow: hidden;
  }
  
  .menu > li a {
    color: #ffffff;
    cursor:pointer;
    text-decoration:none;
  }
  .menu > li a:hover {
    color: #ddc9c9;
  }
  
  .menu-button-container {
    display: none;
    height: 100%;
    width: 30px;
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  
  #menu-toggle {
    display: none;
  }
  
  .menu-button,
  .menu-button::before,
  .menu-button::after {
    display: block;
    background-color: #222;
    position: absolute;
    height: 4px;
    width: 30px;
    transition: transform 400ms cubic-bezier(0.23, 1, 0.32, 1);
    border-radius: 2px;
  }
  
  .menu-button::before {
    content: "";
    margin-top: -8px;
  }
  
  .menu-button::after {
    content: "";
    margin-top: 8px;
  }
  
  #menu-toggle:checked + .menu-button-container .menu-button::before {
    margin-top: 0px;
    transform: rotate(405deg);
  }
  
  #menu-toggle:checked + .menu-button-container .menu-button {
    background: rgba(255, 255, 255, 0);
  }
  
  #menu-toggle:checked + .menu-button-container .menu-button::after {
    margin-top: 0px;
    transform: rotate(-405deg);
  }
  
  
  /* 
     自适应设计 ，把 3700 改为 700 看看？
     移动端菜单折叠，网页端为水平导航菜单。
  */ 
  @media (max-width: 768px) {
    .menu-button-container {
      display: flex;
    }
  
    .menu {
      position: absolute;
      top: 0;
      margin-top: 50px;
      left: 0;
      flex-direction: column;
      width: 100%;
      justify-content: center;
      align-items: center;
      z-index: 9999;
    }
  
    #menu-toggle ~ .menu li {
      height: 0;
      margin: 0;
      padding: 0;
      border: 0;
      transition: height 400ms cubic-bezier(0.23, 1, 0.32, 1);
    }
  
    #menu-toggle:checked ~ .menu li {
      border: 1px solid #333;
      height: 2.5em;
      padding: 0.5em;
      transition: height 400ms cubic-bezier(0.23, 1, 0.32, 1);
    }
  
    .menu > li {
      display: flex;
      justify-content: center;
      margin: 0;
      padding: 0.5em 0;
      width: 100%;
      color: black;
      background-color: #222;
    }
  
    .menu > li:not(:last-child) {
      border-bottom: 1px solid #444;
    }
  }
  /* .menu li{
    background-color: #222;
  } */