.f4{
        font-size: 12px; 
      } 
      .f5{
        font-size: 14px; 
      } 
      .f6{
        font-size: 15px; 
      } 
      .f7{
        font-size: 18px; 
      } 
      .f8{
        font-size: 20px; 
      } 
      .f9{
        font-size: 25px; 
      }
    .sidebar {
        height: 100%;
        width: 0;
        position: fixed;
        z-index: 1100;
        top: 0;
        right: 0;
        background-color: #fffffff7;
        overflow-x: hidden;
        transition: 0.5s;
        padding-top: 60px;
    }
    .sidebar a {
      padding: 8px 8px 8px 32px;
      text-decoration: none;
      color: #000;
      display: block;
      transition: 0.3s;
    }
    .sidebar a:hover {
      color: #6b6bff;
    }
    .sidebar .closebtn {
      position: absolute;
      top: 0;
      right: 5px;
      font-size: 36px;
      margin-left: 50px;
    }
    
    .openbtn {
      font-size: 20px;
      cursor: pointer;
      background-color: #fff;
      color: rgb(88, 88, 255);
      padding: 0px;
      border: none;
      top: 10px;
      left: 10px;
      font-weight: 600;
    }
    .heading_title{
      background-color: #fff;
      padding: 0px;
      border: none;  
    }