style.css

* {
    padding: 0;
    border: none;
    margin: 0;
}

:root {
    --grey: #eff0f1;
    --darkGray: rgb(163, 163, 163);
    --darkerGray: #ebecec;
    font-family: 'Cuprum', sans-serif;
}

header {
    background-color: var(--grey);
    padding: 2rem 0 6rem;
}

header p {
    margin: -1.5rem 2rem 0 0;
    text-align: right;
    font-size: 1.5rem;
    color: rgb(59, 59, 59);
}

header img {
    margin: auto;
    display: block;  
    max-width: 100%; 
}

.container {
    display: flex;
    flex-direction: column;
    width: min(100%, 1000px);
    margin: -2rem auto 0;
    flex-wrap: wrap;
}

.card {
    display: flex;
    align-items: center;
    padding: 1rem;
    border-radius: 8px;
    background-color: var(--darkerGray);
    margin: 0 2rem 2rem;
    color: var(--darkGray);
    cursor: pointer;
    
}

.check-box{
    width: 2rem;
    height: 2rem;
    background-color: white;
    margin-right: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.check {
    width: 50%;
    height: 50%;
    background-color: var(--darkGray);
}

.card.active {   
    background-image: linear-gradient(120deg, #F0E1FF 0%, #E0EDFF 100%);
    color: rgb(59, 59, 59);
    box-shadow: 5px 3px 24px rgba(0, 0, 0, 0.08);
}

.warning {
    color: rgb(226, 73, 46);
    background: none;
    margin: auto;
}

@media only screen and (min-width: 600px) {
    .container {
        flex-direction: column;
    }
}

@media only screen and (min-width: 900px) {
    .container {
        flex-direction: row;
    }
    .card{
        flex: 1 1 calc(50% - 8rem);
    } 
}