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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              doctype html

head
    title Ships!
    link(rel="stylesheet", href="style.css")
    meta(charset="UTF-8")
    meta(name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no")
    meta(name="theme-color" content="#000")

body
    .mode#pause

    each party in ['p1', 'p2']
        .mode(id=party)
            each faction in ['enemy', 'player']
                .battlefield(class=faction, class=party)
                    each line in [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
                        each col, colI in ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L']
                            div(class='field-x' + (colI+1) + '-y' + line)
                                if (col === 'A')
                                    .indicator-col #{line}
                                if (line === 1)
                                    .indicator-line #{col}

                                each checkState in ['ship', 'hit']
                                    input(type="checkbox", class=checkState).check
                                    .check-helper

    .mode#start
        .battlefield.enemy
            ol
                li
                    span You are this color.
                li
                    span Your enemy is
                    span this
                    span color
                li
                    span You may place your ships as follows:
                    ul
                        li 1 x 5 blocks
                        li 2 x 4 blocks
                        li 3 x 3 blocks
                        li 4 x 2 blocks
                li.enternames
                    span Enter your names
                li
                    span Play fair
                li
                    span
                        a(href='#pause') Start

    .status
        input(type="text" placeholder="1st Player").player-name#name1
        input(type="text" placeholder="2nd Player").player-name#name2
        each party  in ['p1', 'p2']
            a.player-link.switch(href='#' + party)
        a.status-link.playpause(href='#pause') End Turn

    h1
        span Sh
        span i
        span ps
        span !
            
          
!
            
              @gridSize: 12;
@zSea: 1;
@zShips: 1000;
@zAbove: 2000;

@seaColor: #123;
@enemyColor: #f0a;
@playerColor: #0c8;
@hitColor: #f27;

//no proper imports at codepen :(
//@import 'animations.less';
@keyframes setShip {
    0% {
        transform: scale(0, 0);
        background-color: transparent;
    }
    100% {
        transform: scale(1, 1);
        background-color: @playerColor;
    }
}

@keyframes hit {
    0% {
        transform: scale(0, 0);
        opacity: 0;
        background-color: transparent;
    }

    10% {
        transform: scale(1.2, 1.2);
        opacity: 1;
        background-color: spin(@hitColor, 40);

        box-shadow: 0 0 0 0.5em var(--shadowColor);
    }

    100% {
        transform: scale(.7, .7);
        opacity: .7;
        background-color: @hitColor;

        box-shadow: 0 0 0 0.5em var(--shadowColor);
    }
}

@keyframes miss {
    0% {
        transform: scale(0, 0);
        opacity: 1;
        background-color: lighten(@seaColor, 50);
    }
    100% {
        transform: scale(1, 1);
        opacity: .8;
        background-color: lighten(@seaColor, 10);
    }
}
//end of animations.less

//@import 'components.less';
.checkerboard(@counter) when (@counter > 0) {
    .checkerboard(@counter - 2);

    &[class^='field-'][class$='-y@{counter}'] {
        &:nth-of-type(odd) {
            background-color: transparent;

            :target & {
                background-color: darken(@seaColor, 3%);
            }
        }

        &:nth-of-type(even) {
            background-color: transparent;

            :target & {
                background-color: darken(@seaColor, 4%);
            }
        }
    }
}

.hit-obj {
    position: absolute;
    visibility: visible;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    animation: hit 1s forwards;
}

.ship-obj {
    position: absolute;
    left: 0;
    top: 0;
    width: 90%;
    height: 90%;
    border-radius: 15%;
    animation: setShip 0.5s forwards;
}

.miss-obj {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    animation: miss 1s forwards;
}
//End of components.less

body {
    --grid-measurements: 70vw;
    @media (min-aspect-ratio: 1/2) {
        --grid-measurements: 35vh;
    }
    
    margin: 0;
    min-height: 100vh;
    background-color: @seaColor;
    background-image: linear-gradient(to bottom, black 0, @seaColor 100%);
    background-repeat: no-repeat;
    overflow: hidden;
    backface-visibility: hidden;
    font-family: sans-serif;
}

.mode {
    opacity: 0;
    pointer-events: none;

    &:target,
    &#start {
        opacity: 1;
        pointer-events: all;
        z-index: 1;
    }

    &#p1, &#p2 {
        position: absolute;
        transform: translateX(0);
        opacity: 1;
        z-index: 2;
    }

    &#p1:target {
        transform: translateX(50vw);

        +#p2 {
            transform: translateX(50vw);
            z-index: 2;
        }
    }

    &#p2 {
        transform: translateX(50vw);
        z-index: 1;
    }

    &#pause:target {
        ~ #p1, ~ #p2 {
            opacity: 0;
        }
    }
}

#start {
    .battlefield {
        left: 50vw;
        display: flex;
        align-items: flex-start;
        justify-content: center;
        width: 100%;
        height: 100%;
    }

    ol {
        list-style: decimal-leading-zero;
        color: @enemyColor;
        font-weight: 700;

        li {
            margin-bottom: 1em;
            line-height: 1.5em;

            &.enternames {
                margin-bottom: 3em;
            }
        }

        span,
        ul li,
        a {
            color: @playerColor;
            font-weight: 400;
            margin-bottom: 0;
        }

        span:nth-of-type(even) {
            color: @enemyColor;
            margin: 0 .5ch;
        }
    }

    .mode:target ~ & {
        display: none;
    }
}

#pause {
    left: 0;
    position: absolute;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    width: 100%;
    height: 100%;
}

.battlefield {
    position: absolute;
    display: grid;
    grid-template-columns: repeat(@gridSize, 1fr);
    width: var(--grid-measurements);
    height: var(--grid-measurements);
    margin: 0 auto 5vw;
    border: 2px solid;
    transform: translate(-50%, 0);
    z-index: @zSea;

    &.player {
        top: calc(var(--grid-measurements) ~"+" 150px);
        border-color: transparent;

        :target & {
            border-color: @playerColor;
        }
    }

    &.enemy {
        top: 100px;
        border-color: transparent;

        :target & {
            border-color: @enemyColor;
        }
    }
}

[class^='field-'] {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    background-color: transparent;

    :target &:nth-of-type(even) {
        background-color: darken(@seaColor, 2%);
    }

    :target &:nth-of-type(odd) {
        background-color: darken(@seaColor, 1%);
    }

    .checkerboard(@gridSize);

    [class^='indicator-'] {
        display: none;

        :target & {
            position: absolute;
            display: flex;
            justify-content: center;
            width: calc(var(--grid-measurements)~"/"@gridSize);
            height: calc(var(--grid-measurements)~"/"@gridSize);
            color: lighten(@seaColor, 10%);
            pointer-events: none;
        }

        &.indicator-line {
            top: -1.5em;
            align-items: flex-start;
        }

        &.indicator-col {
            left: -2.3em;
            align-items: center;
        }
    }
}

.check {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    opacity: 0;

    + .check-helper {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
    }

    &.ship {
        &:checked {
            pointer-events: none;
        }

        &:checked + .check-helper {
            :target .player & {
                &::after {
                    content: "";
                    .ship-obj; // set own ship
                }
            }

            :target .enemy & {
                &::after {
                    content: "";
                    .miss-obj; // miss enemy ship
                }
            }
        }

        &:checked ~ .hit {
            pointer-events: all;
        }
    }

    &.hit {
        position: absolute;
        top: ~"calc(-1 * (var(--grid-measurements) + 50px))";
        left: 50vw;
        width: 100%;
        height: 100%;
        pointer-events: none;

        #p2 &,
        #p1:target & {
            left: 0;
        }

        #p1:not(:target) & + .check-helper::before {
            left: 50vw;
        }

        &:checked {
            opacity: 1;
            visibility: hidden;
            pointer-events: none;

            + .check-helper {
                &::before {
                    content: "";
                    .hit-obj; // hit enemy ships
                    top: ~"calc(-1 * (var(--grid-measurements) + 50px))";
                }

                &::after {
                    content: "";
                    .hit-obj; // hit own ships
                    top: -2px;
                    left: -2px;
                }

                #p1:target &::before,
                #p1:target ~ #p2 &::after,
                #p1:not(:target) &::after,
                #p2:target &::before {
                    display: none;
                }
            }
        }

        #p1:target .battlefield.p1 &,
        #p2:target .battlefield.p2 & {
            display: none;
        }
    }
}

.status {
    position: relative;
    top: 23em;
    display: flex;
    justify-content: center;
    z-index: @zAbove;

    .status-link,
    .player-link {
        display: none;
    }

    .player-name {
        position: relative;
        padding: 3px;
        border: 1px solid @enemyColor;
        background: transparent;
        color: @playerColor;

        &::placeholder {
            color: @playerColor;
            opacity: 1;
        }

        &:first-of-type {
            margin-right: 1em;
        }
    }

    .mode#pause:target ~ & {
        top: 40vh;
        width: calc(100% ~"-" 40px);
        padding: 0 20px;
        text-align: center;
        z-index: @zAbove;

        .player-name,
        .player-link {
            position: absolute;
            display: block;
            width: 80%;
            max-width: 500px;
            height: 40px;
            margin: 0;
            padding: 0;

            &:nth-of-type(even) {
                top: 60px;
            }
        }

        .player-name {
            border: 0;
            border-bottom: 1px solid @enemyColor;
            font-size: 2em;
            font-weight: bold;
            text-align: center;
            text-transform: uppercase;
            pointer-events: none;
        }
    }

    .mode#p1:target ~ &,
    .mode#p2:target ~ & {
        display: block;
        top: 10px;

        .player-name,
        .status-link {
            display: block;
            padding: 0 10px;
            border: 0;
            font-size: 1.5em;
            font-weight: bold;
            text-transform: uppercase;
            pointer-events: none;
        }

        .status-link {
            display: inline-block;
            color: @enemyColor;
            text-decoration: none;
            pointer-events: all;
        }
    }

    .mode#p1:target ~ & #name2 {
        display: none;
    }

    .mode#p2:target ~ & #name1 {
        display: none;
    }
}

h1 {
    position: absolute;
    top: 0;
    width: 120px;
    font-size: 2em;
    text-transform: uppercase;
    text-align: center;
    color: @playerColor;
    transform: translateX(calc(50vw ~"-" 60px));
    transition: transform 0.4s ease-out;

    span:nth-of-type(even) {
        color: @enemyColor;
        text-transform: lowercase;
    }

    &::before {
        margin-right: 1ch;
        color: @enemyColor;
    }

    :target ~ & {
        transform: translateX(calc(100vw ~"-" 130px));
    }
}


            
          
!
            
              //no js
//fork me: https://gitlab.com/iamschulz/ships
//full demo: http://playground.iamschulz.de/ships/
            
          
!
999px

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