* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.tests {
    display: flex;
    flex-wrap: wrap;
    width: 50%;
    margin-left: 25%;
    margin-right: 25%;
    margin-top: 5%;
}
.tests-title {
    font-size: 24px;
}
.test-list {
    align-items: center;
    background-color: #8b7cff37;
    border-radius: 14px;
    display: flex;
    justify-content: center;
    width: 100%;
    flex-wrap: wrap;
    padding: 0.5rem;
}
.test-list a {
    margin: 6px;
    text-align: center;
    font-size: 16px;
    border-radius: 14px;
    background-color: rgb(44 48 148);
    text-decoration: none;
    width: 72px;
    height: 72px;
    color: #fff;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
} 

@media (max-width: 667px) {
    .tests {
        display: flex;
        flex-wrap: wrap;
        width: 90%;
        margin-left: 5%;
        margin-left: 5%;
    }
    .tests-title {
        font-size: 24px;
    }
    .test-list {
        align-items: center;
    background-color: #8b7cff37;
    border-radius: 14px;
    display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        width: 100%;
        margin-top: 10px;
    }
    
    .test-list a {
        margin: 7px; 
        flex: 0 0 calc(28% - 28px); 
        text-align: center;
        font-size: 14px;
        border-radius: 14px;
        background-color: rgb(44 48 148);
        text-decoration: none;
        max-width: 70px;
        height: 70px;
        color: #fff;
    }
    footer {
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            width: 90%;
            margin-left: 5%;
            margin-right: 5%;
            margin-top: 2rem;
            bottom: 0px;
            position: relative;
        }    
    }