.n-challenge{
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.n-challenge-card{
    border-radius: 4px;
    width: 450px;
    position: relative;
    margin-bottom: 78px;
}
.n-challenge-card img{
    width: 100%;
}
.n-card-content{
    padding: 24px;
    background: #FAFBFC;
    position: absolute;
    bottom: -78px;
    width: 100%;
    border-radius: 0px 0px 4px 4px;
}
.n-card-title{
    color:  #2A2B2E;
    font-size: 20px;
    line-height: 150%; 
}
.n-card-desc{
    display: none;
    color: #6A6B6D;
    font-size: 16px;
    line-height: 150%; /* 24px */
    margin-top: 16px;
}

@media screen and (max-width:1600px) {
    .n-challenge-card {
        border-radius: 4px;
        width: 385px;
        margin-bottom: 75px;
    }
    .n-card-content{
        bottom: -75px;
    }
    .n-card-title {
        font-size: 18px;
    }
    .n-card-desc {
        margin-top: 14px;
    }
}

@media screen and (max-width:1280px) {
    .n-challenge-card {
        border-radius: 4px;
        width: 328px;
        margin-bottom: 54px;
    }
    .n-card-content{
        bottom: -54px;
    }
    .n-card-title {
        font-size: 16px;
    }
    .n-card-desc {
        font-size: 14px;
        margin-top: 10px;
    }
}

@media screen and (max-width:768px) {
    .n-challenge{
        flex-wrap: wrap;
    }
    .n-challenge-card{
        width: 100%;
        margin-bottom: 24px;
    }
    .n-card-content{
        position: static;
        padding: 12px;
        font-size: 18px;
    }
    .n-card-desc{
        display: block;
        margin-top: 10px;
        font-size: 16px;
    }
}