Hangman-game-with-React/public/sass/_categories.scss

.categories-container {

    overflow-y: hidden;

    .categories {
        
        position: absolute;
        
        top: 15vh;
        left: 0;
        
        height: 85vh;
        width: 100vw;
        
        background-color: rgb(225, 225, 225);

        transition: opacity 0.4s ease-in-out;

        display: flex;
        flex-direction: column;
        justify-content: space-around;
        align-items: center;

        box-sizing: border-box;

       // padding-top: 10vh;
        //padding-bottom: 10vh;

        button, select {
            height: 10vh;
            width: 50vw;
            
            font-family: Arial, Helvetica, sans-serif;
            font-size: 22pt;

            border: none;
            border-radius: 10px;

            text-align: center;
            text-align-last: center;
            -moz-text-align-last: center;

            display: flex;
            justify-content: space-between;
            align-items: center;

            img, .blank-space {
                height: 4vw;
                width: 4vw;
            }

            @mixin backgroundAndHoverDefiner($buttonColor, $textColor: #000) {

                color: $textColor;
                
                background-color: $buttonColor; 
                border: adjust-color($color: $buttonColor, $blackness: 3%, $alpha: 1.0) solid 2px;

                cursor: pointer;

                transition: 0.4s ease-in-out;
                
                &:hover {
                    background-color: adjust-color($color: $buttonColor, $lightness: 10%, );
                    transition: 0.4s ease-in-out;
                    
                    & img {
                        animation: bounce;
                        animation-duration: 0.5s;
                    }
                }

            }

            &.Select {
                $buttonColor: #E96363;

                @include backgroundAndHoverDefiner($buttonColor);
            }

            &.Cities, &.Ciudades {
                $buttonColor: #5f9ea0;

                @include backgroundAndHoverDefiner($buttonColor);
            }

            &.Pokemons {
                $buttonColor: #ffcb05;

                @include backgroundAndHoverDefiner($buttonColor);
            }

            &.Programming.Languages, &.Lenguajes.De.Programación {
                $buttonColor: #e46f01;
                $textColor: #fff;

                @include backgroundAndHoverDefiner($buttonColor, $textColor);
            }

            &.Animals, &.Animales {
                $buttonColor: #efa482;

                @include backgroundAndHoverDefiner($buttonColor)
            }

            &.Countries, &.Países {
                $buttonColor: #9f0000;
                $textColor: #fff;

                @include backgroundAndHoverDefiner($buttonColor, $textColor);
            }

            &.Random {
                $buttonColor: #4285f4;

                @include backgroundAndHoverDefiner($buttonColor);
            }
        }
        
        &.hidden {
            opacity: 0%;
            
            top: 0;
            height: 85vh;

            button, select {

                height: 5vh;
            }
        }
        
        &.show {
            opacity: 100%;
            
        }
        
        &.stretch {
            height: auto;
            width: 100%;
            
            button, select {
                
                margin-bottom: 5vh;
            }

            &:last-child {

                margin-bottom: 0vh !important;
            }
        }
    }
}

@media (max-width: 991.98px) {

    .categories-container {
        
        .categories {
            padding: 0;

            button, select {
    
                font-size: 4vw !important;
            }
        }

    }
}