*{
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    width: 100vw;
    height: 100vh;
    background-color: #000000;
}

.container {
    width: 26.5vw;
    height: 85vh;
    margin: 25px auto;
    border: 1px solid whitesmoke;
    border-radius: 30px;
    background-color: #000000c0;
    z-index: 2;

}

input {
    /* opacity: 20%; */
    width: 25vw;
    height: 20vh;
    margin: 10px auto;
    color: white;
    text-align: right;
    background-color: #000000;
    font-size: 2.5rem;
    outline: none;
    border: 0;
    padding: 0 0.5rem;
    
    /* direction: ltr; */
    
}

.button-grid{
    width: 25vw;
    height: 60vh;
    display: grid;
   
    grid-template-rows: 1fr 1fr 1fr 1fr 1fr;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    
 
}

button{
    width: 5vw;
    height: 10vh;
    border-radius: 50%;
    outline: none;
    font-size: 2rem;
    font-weight: 600;
    border: 0;
    padding: 0 0.5rem;
}

button:active {
    font-size: 2.2rem;
}

.gray-btn{
    background-color: #A7A7A7;
}

.yellow-btn{
    background-color: #FF9F0A;
    color: white;
}

.dark-btn{
    background-color: #333333;
    color: white;
}

.zero{
    height: 10vh;
    width: 12vw;
    grid-column: span 2;
    border-radius: 45px;
}

.back-video{
    position: absolute;
    right: 0;
    left: 0;
    bottom: 0;
    z-index: -1;
}

@media (min-aspect-ratio: 16/9){
    .back-video{
        width: 100%;
        height: auto;
    }
}
@media (max-aspect-ratio: 16/9){
    .back-video{
        width: auto;
        height: 100%;
    }
}