.start {
    background-color: #f754ee;    
    justify-content: center;
    align-items: center;
    flex-direction: row;
    flex-wrap: wrap
}

.start p {
        font-size: 9.5rem;
        font-weight: bold;
    }

.counter-start {
    margin: 0 5px;
    border: 5px solid #fff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.counter-start p {
        font-size: 12rem;   
        font-weight: 500;     
        text-align: center;        
        animation: enlarge 1s linear infinite;
    }

.counter-start {
    width: 31.25rem;
    height: 31.25rem;
    background-color: #14dafd;
    text-align: center;     
    animation: decreasing 1s linear 0s 5;
}

@keyframes decreasing {
    0% {
        font-size: 12rem;
        box-shadow: 0 0 0 #fff;
    }
    50% {
        font-size: 15.625rem;
        box-shadow: 0 0 1.25rem #fff;
    }
    100% {
        font-size: 12rem;
        box-shadow: 0 0 0 #fff;
    }
}

@keyframes enlarge {
    0% {
        scale: 1;
    }
    50% {
        scale: 1.25;
    }
    100% {
        scale: 1;
    }
}

@media (max-width: 1450px) {
    .start p {
        font-size: 6.5rem;
    }
    .counter-start {        
        width: 23.25rem;
        height: 23.25rem
    }
        .counter-start p {
            font-size: 8rem;
        }
    @keyframes decreasing {
        0% {
            font-size: 8rem;
            box-shadow: 0 0 0 #fff;
        }
        50% {
            font-size: 10.5rem;
            box-shadow: 0 0 1.25rem #fff;
        }
        100% {
            font-size: 8rem;
            box-shadow: 0 0 0 #fff;
        }
    }
}

@media (max-width: 1150px) {
    .start p {
        font-size: 4.5rem;
    }
    .counter-start {        
        width: 17.25rem;
        height: 17.25rem
    }
        .counter-start p {
            font-size: 6rem;
        }
    @keyframes decreasing {
        0% {
            font-size: 6rem;
            box-shadow: 0 0 0 #fff;
        }
        50% {
            font-size: 8.5rem;
            box-shadow: 0 0 1.25rem #fff;
        }
        100% {
            font-size: 6rem;
            box-shadow: 0 0 0 #fff;
        }
    }
}

@media (max-width: 800px) {
    .start {
        flex-direction: column;               
    }
    .counter-start {        
        margin-top: 2rem;
    }
}

@media (max-width: 450px) {
    .start {
        flex-direction: column        
    }
        .start p {
            font-size: 3rem;
        }
    .counter-start {        
        margin-top: 2rem;
        width: 11.25rem;
        height: 11.25rem
    }
        .counter-start p {
            font-size: 4rem;
        }
    @keyframes decreasing {
        0% {
            font-size: 4rem;
            box-shadow: 0 0 0 #fff;
        }
        50% {
            font-size: 6rem;
            box-shadow: 0 0 1.25rem #fff;
        }
        100% {
            font-size: 4rem;
            box-shadow: 0 0 0 #fff;
        }
    }
}