* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: "VT323", monospace;
}

body {
    height: 100vh;
    background-image: url("background.PNG");
    background-size: cover;
    background-position: center;
    position: relative;
}

.open {
    width: (100%);
    display: block;
    justify-content: center;
    align-items: center;
    margin-top: 100px;
}

.mainTag {
    color: #c5c5c5;
    font-weight: bolder;
}

.welcome {
    color: #ffffff;
    font-weight: 800;
    width: 70%;
    margin: auto;
    margin-bottom: 20px;
}

.btn-handle {
    border: 2px solid #2580b3;
    color: #fff;
}

.btn-handle:hover {
    background: linear-gradient(115.87deg, #14f1d9 0%, #3672f8 100%);
}

.headTag,
.points>p {
    color: #c5c5c5;
    font-weight: bolder;
}

#point {
    font-weight: 1300;
}

.memory-game {
    width: calc(25% - 10px);
    height: calc(33.333% - 10px);
    margin: auto;
    display: flex;
    flex-wrap: wrap;
    perspective: 1000px;
    z-index: -1;
}

.memory-card {
    width: calc(25% - 10px);
    height: calc(33.333% - 10px);
    margin: 5px;
    position: relative;
    transform: scale(1);
    transform-style: preserve-3d;
    transition: transform 0.5s;
    border-radius: 5px;
    background-image: linear-gradient(-225deg, #76c3f0 0%, #2580b3 100%);
}

.memory-card:active {
    transform: scale(0.97);
    transition: transform 0.2s;
}

.memory-card.flip {
    transform: rotateY(180deg);
}

.front-face,
.back-face {
    width: 100%;
    height: 100%;
    padding: 10px;
    position: absolute;
    border-radius: 5px;
    backface-visibility: hidden;
}

.front-face {
    transform: rotateY(180deg);
}

#won {
    visibility: hidden;
    border-radius: 10px;
    background: #ffbdf1;
    background-image: linear-gradient(to bottom, #76c3f0 0%, #2580b3 100%);
    margin: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    border: 5px solid #064d75;
}

#won>h1,
#won p {
    font-weight: bolder;
}

#playAgain {
    border: 2px solid #2580b3;
    border-radius: 5px;
    background: #2580b3;
}

#playAgain:hover {
    border: 2px solid #064d75;
    background: linear-gradient(115.87deg, #14f1d9 0%, #3672f8 100%);
}


/*LARGE DEVICES*/

@media (min-width: 992px) {
    .mainTag {
        font-size: 80px;
        margin-top: 60px;
    }
    .welcome {
        font-size: 35px;
    }
    .btn-handle {
        font-size: 40px;
        padding: 10px 20px;
        border-radius: 10px;
    }
    .memory-game {
        width: 640px;
        height: 530px;
    }
    .front-face,
    .back-face {
        padding: 10px;
    }
    #won {
        padding: 50px;
    }
    .headTag {
        font-size: 70px;
    }
    .points>p,
    #won>h1,
    #won p,
    #playAgain {
        font-size: 35px;
    }
}


/*medium devices*/

@media (min-width: 768px) and (max-width: 991px) {
    .mainTag {
        font-size: 75px;
        margin-top: 60px;
    }
    .welcome {
        font-size: 30px;
    }
    .btn-handle {
        font-size: 35px;
        padding: 10px 20px;
        border-radius: 10px;
    }
    .memory-game {
        width: 620px;
        height: 512px;
    }
    .front-face,
    .back-face {
        padding: 10px;
    }
    #won {
        padding: 50px;
        top: 40%;
    }
    .headTag {
        font-size: 70px;
    }
    .points>p,
    #won>h1,
    #won p,
    #playAgain {
        font-size: 35px;
    }
}


/*SMALL DEVICES*/

@media (min-width: 576px) and (max-width: 767px) {
    .mainTag {
        font-size: 60px;
        margin-top: 50px;
    }
    .welcome {
        font-size: 25px;
    }
    .btn-handle {
        font-size: 30px;
        padding: 10px 20px;
        border-radius: 10px;
    }
    .memory-game {
        width: 480px;
        height: 398px;
    }
    .front-face,
    .back-face {
        padding: 6px;
    }
    #won {
        padding: 35px;
        top: 30%;
    }
    .headTag {
        font-size: 50px;
    }
    .points>p,
    #won>h1,
    #won p,
    #playAgain {
        font-size: 30px;
    }
}


/*EXTRA SMALL DEVICES*/

@media (min-width: 378px) and (max-width: 575px) {
    .mainTag {
        font-size: 45px;
        margin-top: 45px;
    }
    .welcome {
        font-size: 25px;
    }
    .btn-handle {
        font-size: 30px;
        padding: 10px 20px;
        border-radius: 10px;
    }
    .memory-game {
        width: 380px;
        height: 315px;
    }
    .front-face,
    .back-face {
        padding: 6px;
    }
    #won {
        padding: 30px;
        top: 30%;
    }
    .headTag {
        font-size: 45px;
    }
    .points>p,
    #won>h1,
    #won p,
    #playAgain {
        font-size: 25px;
    }
}


/*X-EXTRA SMALL DEVICES*/

@media (max-width: 377px) {
    .mainTag {
        font-size: 45px;
        margin-top: 40px;
    }
    .welcome {
        font-size: 20px;
    }
    .btn-handle {
        font-size: 30px;
        padding: 10px 20px;
        border-radius: 10px;
    }
    .memory-game {
        width: 340px;
        height: 282px;
    }
    .front-face,
    .back-face {
        padding: 5px;
    }
    #won {
        padding: 15px;
        top: 30%;
    }
    .headTag {
        font-size: 40px;
    }
    .points>p,
    #won>h1,
    #won p,
    #playAgain {
        font-size: 25px;
    }
}