.center{
    display:flex;
    justify-content: space-evenly;
    align-items: center;
    height:100vh;
}
.circle{
    border-radius:10%;
    box-shadow:0px 0px 1px 1px #0000001a;
}
.pulse{
    animation: pulse-animation 2s infinite;
}
@keyframes pulse-animation {
    0%{
        box-shadow: 0 0 0 0px rgba(154, 193, 86, 0.2);
    }
    10%{
        transform:scale(1.2);
    }
    50%{
        transform:scale(1);
    }
    100%{
        box-shadow: 0 0 0 400px rgba(0,0,0,0);
    }
}
.master{
    color:black;
    float:right;
}
@media (max-width:900px){
    .master{
        display:none;
    }
}