header {
    height: 50px;
    width: 100%;
    display: flex;
    background-color: #133954;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    z-index: 100;

  }
  
  header .div_logo {
      display: flex;
      align-items: center;
      width: 33%;
      justify-content: left;
      margin-left: 60px;
  }
  
  header .div_logo .logo1 {
      height: 25px;
    }
    
  header .div_logo .logo2 {
      height: 15px;
      margin-left: 6px;
    }
  
  header .list_header {
    width: 25%;
    display: flex;
    justify-content: space-between;
  }
  
  header .list_header  .selection {
    width: auto;
    height: 38px;
    left: 517px;
    top: 31px;
    border: none;
    background-color: #133954;
    color: white;
  }
  
  header .list_header  .selection:hover{
    cursor: pointer;
  }
  
  header .tools_header {
      display: flex;
      width: 33%;
      justify-content: right;
      margin-right: 60px;
  }
  
  header .tools_header i:hover, .tool_selected{
      cursor: pointer;
      background-color: #8d92b4;
  }
  
  header .tools_header i{
      color: white;
      font-size: 20px;
      padding: 15px;
      border-radius: 6px;
  }

@media (max-width: 500px) {
    header .div_logo {
        margin-left: 10px;
        width: 15%;
    }
    header .tools_header {
        width: 20%;
        margin: 0px;
        margin-right: 10px;
    }
    header .tools_header i{
        padding: 5px;
        font-size: 18px;
    }
    header .list_header {
        width: 80%;
        margin: 0px 15px 0px 18px;
    }
    header .div_logo .logo2 {
        display: none;
    }
}