body    {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}
.main-field {
    background-color: #29343d;
}
h3  {
    text-transform: uppercase;
    font-weight: bold;
}
.btn-outline-secondary {
    color: #0489ff;
    border-color: #6c757d;
}
.btn {
    margin-bottom: 3vw;
    font-weight: bolder;
    box-shadow: 0 0 20px rgba(255,240,180,.8);
}

.central-field  {
    margin: auto;
    text-align: center;
    color: #fff;
}
.page-wrapper {    
    display: grid;
}
.game-field {
    background-color: bisque;
    border-radius: .5vw;
    border: .3vw solid #808080;
}
.target, .miss {
    cursor: pointer;
    color: white;
    text-align: center;
}
.target {
    background-color: #00FF7F;
    font-weight: 500;
}
.miss {
    background-color: red;
    font-weight: bolder;
}

/* **Smarphones Vertical and Horisontal** */
@media screen and (min-width: 320.02px) and (max-width: 480px) {
    .central-field  {
        width: 49%;
    }
    h3  {
        margin: 0 auto 1em;
        padding-top: 1em;
        font-size: 0.8rem;
        text-shadow: 0 0 15px rgb(235, 255, 51);
    }
    h4  {
        font-size: 0.4rem;
        padding-bottom: 5px;
    }
    .page-wrapper {    
        grid-template-columns: repeat(6, minmax(20px, 7.22vw));
        grid-template-rows: repeat(6, minmax(20px, 7.22vw));
        grid-gap: 0.3em;
        margin-top: 0.5em;
        margin-bottom: 1em;
    }
    .btn-lg    {
        margin-top: 0;
        padding: 0.3em 0.2em;
        font-size: 0.7rem;
        border-radius: 0.3em;
    }
    .target, .miss {
        border-radius: 1vw;
        text-shadow: 0 0 10px rgba(0,0,0,0.8);
        box-shadow: 0 0 30px rgba(255,240,180,.8);
    }
    .target {
        padding-top: 0.8vw;
        font-size: 3.2vw;
    }
    .miss {
        padding-top: 1.5vw;
        font-size: 2vw;
    }
}
/* **Tablets** */
@media screen and (min-width: 480.02px) and (max-width: 767.98px) {
    .central-field  {
        width: 60%;
    }
    h3  {
        margin: 0 auto 0.3em;
        padding-top: 1em;
        font-size: 1.3rem;
        text-shadow: 0 0 15px rgb(187, 51, 255);
    }
    h4  {
        font-size: 0.8rem;
        padding-bottom: 15px;
    }
    .page-wrapper {    
        grid-template-columns: repeat(6, minmax(40px, 9vw));
        grid-template-rows: repeat(6, minmax(40px, 9vw));
        grid-gap: 0.4em;
        margin-top: 0.5em;
        margin-bottom: 1em;
    }
    .btn-lg    {
        margin-top: 1vw;
        padding: 0.5em 0.5em;
        font-size: 1rem;
        border-radius: 0.5em;
    }
    .target, .miss {
        border-radius: 2vw;
        text-shadow: 0 0 8px rgba(0,0,0,0.8);
        box-shadow: 0 0 5px rgba(255,240,180,.8);
    }
    .target {
        padding-top: 1vw;
        font-size: 4vw;
    }
    .miss {
        padding-top: 2.3vw;
        font-size: 2vw;
    }
}
@media screen and (min-width: 768px) and (max-width: 1439.98px) {
    .central-field  {
        width: 54%;
    }
    h3  {
        margin: 0 auto 0.3em;
        padding-top: 1em;
        font-size: 1.7rem;
        text-shadow: 0 0 30px rgb(4, 137, 255);
    }
    h4  {
        font-size: 1rem;
        padding-bottom: 15px;
    }
    .page-wrapper {    
        grid-template-columns: repeat(6, minmax(50px, 8vw));
        grid-template-rows: repeat(6, minmax(50px, 8vw));
        grid-gap: 0.5em;
        margin-top: 1vw;
        margin-bottom: 2vw;
    }
    .btn-lg    {
        margin-top: 1vw;
        padding: 0.5em 0.5em;
        font-size: 1.3rem;
        border-radius: 0.7em;
    }
    .target, .miss {
        border-radius: 2vw;
        text-shadow: 0 0 15px rgba(0,0,0,0.8);
        box-shadow: 0 0 15px rgba(255,240,180,.8);
    }
    .target {
        padding-top: 0.5vw;
        font-size: 4vw;
    }
    .miss {
        padding-top: 2vw;
        font-size: 2vw;
    }
}
/* **Desktops and Wide Screen Devices** */
@media screen and (min-width: 1440px) {
    .central-field  {
        width: 55%;
    }
    h3  {
        margin: 0 auto 0.3em;
        padding-top: 1em;
        font-size: 2rem;
        text-shadow: 0 0 30px rgb(4, 137, 255);
    }
    h4  {
        font-size: 1rem;
        padding-bottom: 20px;
    }
    .page-wrapper {    
        grid-template-columns: repeat(6, minmax(50px, 8vw));
        grid-template-rows: repeat(6, minmax(50px, 8vw));
        grid-gap: 0.5em;
        margin-top: 1vw;
        margin-bottom: 2vw;
    }
    .btn-lg    {
        margin-top: 1vw;
        padding: 0.5em 0.5em;
        font-size: 1.5rem;
        border-radius: 1em;
    }
    .target, .miss {
        border-radius: 2vw;
        text-shadow: 0 0 15px rgba(0,0,0,0.8);
        box-shadow: 0 0 15px rgba(255,240,180,.8);
    }
    .target {
        padding-top: 0.5vw;
        font-size: 4vw;
    }
    .miss {
        padding-top: 2vw;
        font-size: 2vw;
    }
}