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HTML 

              
                <div class="content">
    <div class="grid">
        <span class="intro">Get your new alarm clock</span>
        <div class="background-text-1">
            <p>Alarm</p>
        </div>       
        
        <div class="background-text-2">
            <p>Clock</p>
        </div>

        <div class="title">
            <span>
                <p>When</p>
                <p>do</p>
                <p>you</p>
                <p>want</p>
            </span>
            
            <span>
                <p>to</p>
                <p>wake</p>
                <p>up ?</p>
            </span>
        </div>      

        <div class="fill"></div>
        <p class="text">Waking up is one of the hardest things to do no matter what time of the year it is. However, in the longer, darker, winter months, waking up can literally seem like an impossible task.</p>
        
        <div class="img-bg">
           <img src="http://adriengervaix.com/projects/alarm/img/jocko.png">
        </div>
        
        <div class="slider">
            <div class="slider-content">
                <div class="dot" id="dotslider">
                    <div class="value-slider" id="range-data-slider">4:35</div>
                </div>
                <input type="range" min="270" max="630" step="1" value="270" class="range-style" id="slider-input">
            </div>
            
                <div class="count">
                    <div class="val" id="range-data">4:35</div>
                    
                    <span>AM</span>
                </div>
            
            <div class="back-slider">
                <svg width="82" height="291" xmlns="http://www.w3.org/2000/svg"><g fill="#4A4444" fill-rule="evenodd"><path d="M42 44h40v2H42zM42 178h40v2H42zM42 89h40v2H42zM42 222h40v2H42zM42 133h40v2H42zM42 267h40v2H42zM62 22h20v2H62zM0 156h82v2H0zM62 289h20v2H62zM62 0h20v2H62zM74 278h8v1h-8zM74 123h8v1h-8zM74 145h8v1h-8zM74 234h8v1h-8zM74 78h8v1h-8zM74 189h8v1h-8zM74 34h8v1h-8zM74 256h8v1h-8zM74 101h8v1h-8zM74 212h8v1h-8zM74 56h8v1h-8zM74 167h8v1h-8zM74 12h8v1h-8zM62 111h20v2H62zM62 245h20v2H62zM62 67h20v2H62zM62 200h20v2H62z"/></g></svg>
            </div>
        </div>  
        
    </div>
</div>
!

CSS 

              
                $primary: #0F0402;
$secondary: #DB442B;
$grey: #4A4444;
$white: #FFFFFF;

@font-face {
  font-family: 'Arges-BlackCondensed';
  src: url('https://adriengervaix.com/projects/alarm//font/Arges-BlackCondensed.eot');
  src: url('https://adriengervaix.com/projects/alarm//font/Arges-BlackCondensed.eot?#iefix') format('embedded-opentype'),
       url('https://adriengervaix.com/projects/alarm//font/Arges-BlackCondensed.woff2') format('woff2'),
       url('https://adriengervaix.com/projects/alarm//font/Arges-BlackCondensed.woff') format('woff'),
}

body{
    background-color: $primary;
}

.content{
    display: grid;
    justify-items: center;
    margin-bottom: 80px;
   
    .grid{
        width: 1280px;
        display: grid;
        grid-template-columns: repeat(12, [col] 87px);
        grid-auto-rows: 60px;
        grid-column-gap: 20px; 
        grid-row-gap: 12px;
        color: $white;
        
        .intro{
            grid-column: col / span 7;
            grid-row: row 2 / span 1;
            color: $secondary;
            font-size: 18px;
            font-family: 'Asap', sans-serif;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            animation: intro-anim-opacity 1600ms;
        }
        
        .background-text-1{
            grid-column: col / span 6;
            grid-row: row 2 / span 6;
            overflow: hidden;
            
            p{
                font-size: 350px;
                font-family: 'Arges-BlackCondensed', sans-serif;
                line-height: 500px;
                text-transform: uppercase;
                -webkit-text-stroke: 1px $grey;
                color: rgba(0, 0, 0, 0); 
                animation: intro-anim-translate 800ms ease;    
            }    
        }        
        
        .background-text-2{
            grid-column: col / span 6;
            grid-row: row 9 / span 6;
            overflow: hidden;
            
            p{
                font-size: 350px;
                font-family: 'Arges-BlackCondensed', sans-serif;
                line-height: 500px;
                text-transform: uppercase;
                -webkit-text-stroke: 1px $grey;
                color: rgba(0, 0, 0, 0); 
                animation: intro-anim-translate 1000ms ease; 
            }    
        }
        
        .title{
            grid-column: col 3 / span 11; 
            grid-row: row 6 / span 6;
            z-index: 10;
            overflow: hidden;

            span{
                display: flex;
                overlfow: hidden;
                
                p{
                    font-family: 'Arges-BlackCondensed', sans-serif;
                    font-size: 210px;
                    line-height: 180px;
                    margin-right: 20px;
                    color: white;
                    overlfow: hidden;
                    
                    &:nth-child(1){animation: intro-anim-text 800ms}
                    &:nth-child(2){animation: intro-anim-text 1000ms}
                    &:nth-child(3){animation: intro-anim-text 1200ms}
                    &:nth-child(4){animation: intro-anim-text 1400ms}
                    &:nth-child(5){animation: intro-anim-text 1600ms}
                }
                               
                    
            }
        }
        
        .img-bg{
            grid-column: col 7 / span 6; 
            grid-row: row 2 / span 6;   
            z-index: -10;
            animation: anim-img 1000ms ease;
        }
        
        .fill{
            grid-column: col / span 2; 
            grid-row: row 8 / span 2;
            background-color: $secondary;
            animation: intro-anim-scale 800ms ease;
            transform-origin: 0% 50%;
        }
        
        .text{
            grid-column: col 5 / span 2;
            grid-row: row 12 / span 4;
            font-family: 'Asap', sans-serif;
            font-size: 14px;
            line-height: 22px;
            color: $secondary;
            animation: intro-anim-text 1400ms;
        }
        
        .slider{
            grid-column: col 8 / span 5;
            grid-row: row 9 / span 5;
            z-index: 80;
            display: flex;
            justify-content: flex-end;
            align-items: center;
            border-bottom: 1px solid $grey;
            
            animation: intro-anim-text 1800ms;
            
            &:before{
                content:'';
                width: 320px;
                height: 1px;
                background-color: grey;
                position: absolute;
                align-self: flex-start;
            }

            .slider-content{
                transform: rotate(90deg);
                z-index: 120;
                width: 348px;
                height: 514px;
                
                &:hover {
                    .dot{
                        transform: scale(1.2);
                        background-color: darkred;
                        
                        .value-slider{
                            transform: rotate(-90deg) scale(1);
                            opacity: 1;
                        }
                        
                    }
                    
                     input[type="range"]::-webkit-slider-thumb{
                        background-color: darkred;
                    }
                    
                    
                }

                .dot{
                    width: 40px;
                    height: 40px;
                    background-color: $secondary;
                    border-radius: 30px;
                    position: absolute;
                    transform: translate(calc(-50% + 5px), -15px);
                    transform-origin: 90px 150px;
                    transition: transform 200ms;
                    display: flex;
                    justify-content: center;
                    align-items: center;
                    
                    .value-slider{
                        transform: rotate(-90deg)  scale(0);
                        font-size: 22px;
                        opacity: 0;
                        transition: transform 200ms, opacity 200ms;
                        text-align: center;
                        font-family: 'Arges-BlackCondensed', sans-serif;
                        align-self: center;
                    }
                    
                }

                input[type="range"]{
                    width: 100%;
                    height: 100%;
                    -webkit-appearance: none;
                    outline: none;
                    margin-left: 0;
                    cursor: pointer;
                }

                input[type="range"]::-webkit-slider-thumb{
                    -webkit-appearance: none; 
                    width: 10px;
                    height: 520px;
                    background-color: $secondary; 
                    border-radius: 10px;
                }
                
                .range-style{
                    background: none;
                }

                input[type="range"]::-webkit-slider-thumb:hover{
                    background-color: darkred;
                }
            }
            
            .count{
                position: absolute;
                z-index: 80;
                display: flex;
                font-family: 'Arges-BlackCondensed', sans-serif;
                font-size: 48px;
                margin-left: -80px;
            
                .val {
                    font-size: 180px;
                    transform: rotate(0deg);
                }
            
                span{
                    transform: translate(5px, 30px);
                }
            }
        }
    }
}

            
@keyframes intro-anim-scale{
    0%{transform: scaleX(0);}
    100%{transform: scaleX(1);}
}

@keyframes intro-anim-translate{
    0%{transform: translateY(600px);}
    100%{transform: translateY(0px);}
}

@keyframes intro-anim-text{
    0%{transform: translateY(200px); opacity: 0;}
    100%{transform: translateY(0px); opacity: 1;}
}

@keyframes intro-anim-opacity{
    0%{opacity: 0;}
    100%{opacity: 1;}
}

            
@keyframes anim-img{
    0%{transform: scale(1.2); opacity: 0}
    100%{transform: scale(1); opacity: 1}
}

h1, h2, p {
  margin: 0;
}
!

JS 

              
                    function time_convert(num){ 
        var hours = Math.floor(num / 60);  
        var minutes = num % 60;
        return hours + ":" + (minutes > 9 ? minutes : "0" + minutes) ; 
    }

    window.onload = function(){
        var slider = document.getElementById("slider-input"); 
        var result = document.getElementById("range-data");
        var resultSlider = document.getElementById("range-data-slider");
        
        var d = document.getElementById("dotslider").style;
            slider.oninput = function(){            
                resultSlider.innerHTML = time_convert(slider.value);
                result.innerHTML = time_convert(slider.value);
                const ratio = (100 / (630-270)) * (slider.value - 270);
                d.left = `calc(${ratio}% - ${(ratio / 100) * 10}px)`;
            } 
    }
!
999px

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