.dropdown-menu1{
    position: absolute;
    background-color: rgba(255, 255, 255, 0.612);
    z-index: 1000;
    margin-top: 0%;
    width: 300px;
    height: 500px;
    margin-left: 0%;
    display: none;
    border-radius: 5%;
} 
.hack:hover .dropdown-menu1{
    display: block;
}
iframe{
    width: 100%;
    height: 800px;
    border: none;
}
.dropdown-menu1 a{
    padding: 2%;
    text-align: center;
}
.master video{
    width: 80%;
    margin-left: 10%;
}
::-webkit-scrollbar{
    width: 5px;
    background-color: white;
  scroll-snap-type: mandatory;
}
::-webkit-scrollbar-button{
    background-color: red;
}
::-webkit-scrollbar-thumb{
    background-color: black;
    border-radius: 10%;
}