body{
    background: #0f0f0f;
    overflow: hidden;
    color: white;
    font-family: 'Quicksand', sans-serif;
}
.yellow{
    color: #fecb06
}
#playground{
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 20vh
}
.btn{
    display:block;
    border: none;
    padding: 5px 20px;
    font-size: 30px;
    background: #fecb06;
    color: #0f0f0f;
    margin-left: auto ;
    margin-right: auto ;
    text-align:center;
    transition: color 600ms ease-in-out, background 600ms ease-in-out;
}
.btn:hover{
    background: #0f0f0f;
    color: #fecb06;
    transition: color 300ms ease-in-out, background 300ms ease-in-out;
}
#block{
    position: absolute;
    border: 1px solid #fecb06;
    height: 35px;
    width: 35px;
    display: none;
}
#block2{
    position: absolute;
    
    border: 1px solid #06d1fe;
    height: 35px;
    width: 35px;
    display: none;
}
footer{
    opacity: 0.7;
    text-align: center
}
.ue{
    text-align: center;
    font-size: 40px;
}