learn-morse-code/src/scss/App.scss

$main-bg-color: #FFF;
$main-box-shadow: 0px 3px 3px rgba(0, 0, 0, 0.2);
$main-border-radius: 5px;
// $border-radius-neumorphic: 0px -6px 10px rgba(255, 255, 255, 1), 0px 4px 15px rgba(0, 0, 0, 0.15);

html, body {
    margin: 0px;
    padding: 0px;
    height: 100%;
    width: 100%;
    box-sizing: border-box;
    background: $main-bg-color;
}
#root {
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}
#mode-picker {
    display: flex;
    div {
        background: #fcfcfc;
        margin: 15px;
        padding: 5px;
        box-shadow: $main-box-shadow;
        border-radius: $main-border-radius;
    }
}
#main-content {
    width: 95vw;
    border: 1px solid red;
    display: flex;
    flex-direction: column;
}

#morseButton {
    width: 200px !important;
    height: 200px;
    margin: 30px;
    background: goldenrod;
    border-radius: 50%;
    align-self: center;
}

#morseBufferDisplay {
    display: flex;
    justify-content: center;
    // border: 1px solid green;
    width: 100%;
    height: 40px;
    margin-bottom: 20px;

    #ditDahs {
        width: 50%;
        padding-right: 5px;
        border-right: 2px solid #000;
        display: flex;
        flex-direction: row;
        justify-content: flex-end;

        .ditDah {
            background: #DDD;
            height: 40px;
            width: 30px !important;
            margin-left: 3px;
            // box-shadow: 0px 1px 0px #000;
            border-radius: $main-border-radius;
            box-shadow: $main-box-shadow;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 35px;
            font-family: 'Courier';
            font-weight: bold;
        }
    }

    #alphanumeric-container {
        border-left: 2px solid #000;
        padding-left: 5px;
        width: 50%;
        display: flex;
        
        #alphanumeric {
            font-size: 40px;
            font-family: 'Courier';
            font-weight: bold;
            background-color: transparent;
            
            &:first-child {
                padding-left: 5px;
                padding-right: 5px;
                // box-shadow: $main-box-shadow;
            }
        }
    }
}

.space {
    font-size: 20px;
}
.morseError {
    background: rgba(255,0,0,0.4);
    color: rgb(120, 0, 0);
    border-radius: 5px;
}

#morseDisplay {
    /* border: 1px solid blue; */
    display: flex;
    flex-direction: column;

    .morseCard:nth-child(1){
        opacity: 100%;
    }
    .morseCard:nth-child(2){
        opacity: 70%;
    }
    .morseCard:nth-child(3){
        opacity: 50%;
    }
    .morseCard:nth-child(4){
        opacity: 30%;
    }
    .morseCard:nth-child(5){
        opacity: 10%;
    }
}

.morseCard {
    display: flex;
    flex-direction: row !important;
    justify-content: center;
    /* border: 1px solid orange; */
    margin-bottom: 2px;
    font-size: 2.5rem;
    font-family: 'Courier';
    font-weight: bold;
    /* width: 100%; */


    div div {
        // border: 1px solid purple;
        cursor: default;
        padding: 5px;
        margin: 3px;
        background: #EEE;
        // width: 50%;
        white-space: nowrap;
        border-radius: $main-border-radius;
        box-shadow: $main-box-shadow;
        line-height: 2rem;
    }
    .ditDahs-container, .alphanumeric-container {
        display: flex;
        width: 50%;
    }
    .ditDahs-container {
        justify-content: flex-end;
    }
    .ditDahs {
        // border: 1px solid red;
        display: flex;
        justify-content: flex-end;
        align-items: center;
        overflow-wrap: break-word;
    }
}