#tweets {
    column-count: 4;
    width: 100%;
}
.tweet {
    width: 100%;
    padding: 2px;
    box-sizing: border-box;
    display: inline-block;

    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

@media only screen and (max-width: 1300px) {
    #tweets {
        column-count: 3;
    }
}
@media only screen and (max-width: 1000px) {
    #tweets {
        column-count: 2;
    }
}
@media only screen and (max-width: 600px) {
    #tweets {
        column-count: 1;
    }
}

.gradient {
    position: absolute;
    border: solid 1px #ccc;
    width: 60px; 
    height: 60px; 
    border-radius: 50%;
    z-index: -1;
}