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HTML

About HTML Preprocessors

HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

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JavaScript

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JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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HTML 

              
                <div class="box">
            <ul id="first-list">
                <li>
                    <span></span>
                    <div class="title">comment #01</div>
                    <div class="info">the best animation , the best toturials you would ever see .</div>
                    <div class="name">- dr. mohamed -</div>
                    <div class="time">
                        <span>JUN, 17<sup>th</sup></span>
                        <span>12:00 AM</span>
                    </div>
                </li>
                <li>
                    <span></span>
                    <div class="title">summery #01</div>
                    <div class="info">the best animation , the best toturials you would ever see here only . you can learn how to animate and how to use SVG . even else you can add your own animations .</div>
                    <div class="name">- eng. amr -</div>
                    <div class="time">
                        <span>JUN, 29<sup>th</sup></span>
                        <span>11:36 AM</span>
                    </div>
                </li>
                <li>
                    <span></span>
                    <div class="title">comment #02</div>
                    <div class="info">the best animation , the best toturials you would ever see . what about canvas ?? do you like it ..</div>
                    <div class="name">- dr. ahmed -</div>
                    <div class="time">
                        <span>FEB, 2<sup>nd</sup></span>
                        <span>02:00 PM</span>
                    </div>
                </li>
                
                <div class="arrow" id="btn1">
            
                <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" id="Capa_1" x="0px" y="0px" width="512px" height="512px" viewBox="0 0 284.929 284.929" style="enable-background:new 0 0 284.929 284.929;" xml:space="preserve">
                    <g>
                        <g>
                            <path d="M135.899,167.877c1.902,1.902,4.093,2.851,6.567,2.851s4.661-0.948,6.562-2.851L282.082,34.829    c1.902-1.903,2.847-4.093,2.847-6.567s-0.951-4.665-2.847-6.567L267.808,7.417c-1.902-1.903-4.093-2.853-6.57-2.853    c-2.471,0-4.661,0.95-6.563,2.853L142.466,119.622L30.262,7.417c-1.903-1.903-4.093-2.853-6.567-2.853    c-2.475,0-4.665,0.95-6.567,2.853L2.856,21.695C0.95,23.597,0,25.784,0,28.262c0,2.478,0.953,4.665,2.856,6.567L135.899,167.877z" fill="#FFFFFF"/>
                            <path d="M267.808,117.053c-1.902-1.903-4.093-2.853-6.57-2.853c-2.471,0-4.661,0.95-6.563,2.853L142.466,229.257L30.262,117.05    c-1.903-1.903-4.093-2.853-6.567-2.853c-2.475,0-4.665,0.95-6.567,2.853L2.856,131.327C0.95,133.23,0,135.42,0,137.893    c0,2.474,0.953,4.665,2.856,6.57l133.043,133.046c1.902,1.903,4.093,2.854,6.567,2.854s4.661-0.951,6.562-2.854l133.054-133.046    c1.902-1.903,2.847-4.093,2.847-6.565c0-2.474-0.951-4.661-2.847-6.567L267.808,117.053z" fill="#FFFFFF"/>
                        </g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                </svg>
                
            </div> 
            </ul>
                
               
            
            <ul id="second-list">
                <li>
                    <span></span>
                    <div class="title">comment #03</div>
                    <div class="info">the best animation , the best toturials you would ever see .</div>
                    <div class="name">- mohamed -</div>
                    <div class="time">
                        <span>MAR, 21<sup>st</sup></span>
                        <span>03:49 PM</span>
                    </div>
                </li>
                <li>
                    <span></span>
                    <div class="title">summery #02</div>
                    <div class="info">the best animation , the best toturials you would ever see here only . you can learn how to animate and how to use SVG . even else you can add your own animations .</div>
                    <div class="name">- mohamed -</div>
                    <div class="time">
                        <span>MAY, 13<sup>rd</sup></span>
                        <span>09:23 AM</span>
                    </div>
                </li>
                <li>
                    <span></span>
                    <div class="title">comment #04</div>
                    <div class="info">the best animation , the best toturials you would ever see . what about canvas ?? do you like it ..</div>
                    <div class="name">- mohamed -</div>
                    <div class="time">
                        <span>OCT, 15<sup>th</sup></span>
                        <span>08:30 PM</span>
                    </div>
                </li>
                
                <div class="arrow" id="btn2">
            
                <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" id="Capa_1" x="0px" y="0px" width="512px" height="512px" viewBox="0 0 284.929 284.929" style="enable-background:new 0 0 284.929 284.929;" xml:space="preserve">
                    <g>
                        <g>
                            <path d="M135.899,167.877c1.902,1.902,4.093,2.851,6.567,2.851s4.661-0.948,6.562-2.851L282.082,34.829    c1.902-1.903,2.847-4.093,2.847-6.567s-0.951-4.665-2.847-6.567L267.808,7.417c-1.902-1.903-4.093-2.853-6.57-2.853    c-2.471,0-4.661,0.95-6.563,2.853L142.466,119.622L30.262,7.417c-1.903-1.903-4.093-2.853-6.567-2.853    c-2.475,0-4.665,0.95-6.567,2.853L2.856,21.695C0.95,23.597,0,25.784,0,28.262c0,2.478,0.953,4.665,2.856,6.567L135.899,167.877z" fill="#FFFFFF"/>
                            <path d="M267.808,117.053c-1.902-1.903-4.093-2.853-6.57-2.853c-2.471,0-4.661,0.95-6.563,2.853L142.466,229.257L30.262,117.05    c-1.903-1.903-4.093-2.853-6.567-2.853c-2.475,0-4.665,0.95-6.567,2.853L2.856,131.327C0.95,133.23,0,135.42,0,137.893    c0,2.474,0.953,4.665,2.856,6.57l133.043,133.046c1.902,1.903,4.093,2.854,6.567,2.854s4.661-0.951,6.562-2.854l133.054-133.046    c1.902-1.903,2.847-4.093,2.847-6.565c0-2.474-0.951-4.661-2.847-6.567L267.808,117.053z" fill="#FFFFFF"/>
                        </g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
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                    <g>
                    </g>
                    <g>
                    </g>
                    <g>
                    </g>
                </svg>
                
            </div>
            </ul>
            
            <script src="JavaScript/timeline-V2.js"></script>
        </div>
!

CSS 

              
                body{
    margin: 0;
    padding: 0;
    background-color:#ff6d6d;
    font-family: arial
}

.box{
    margin:0 10%;
    height: 630px;
    overflow: hidden;
    padding: 10px 0 40px 60px
}

.box ul{
    list-style-type: none;
    margin: 0;
    padding: 0;
    position: relative;
    transition: all 0.5s linear;
    top:0
}

.box ul:last-of-type{top:80px}

.box ul:before{
    content: "";
    display: block;
    width: 0;
    height: 100%;
    border:1px dashed #fff;
    position: absolute;
    top:0;
    left:30px
}

.box ul li{
    margin: 20px 60px 60px;
    position: relative;
    padding: 10px 20px;
    background:rgba(255, 255, 255, 0.3);
    color:#fff;
    border-radius: 10px;
    line-height: 20px;
    width: 35%
}


.box ul li > span{
    content: "";
    display: block;
    width: 0;
    height: 100%;
    border:1px solid #fff;
    position: absolute;
    top:0;
    left:-30px
}

.box ul li > span:before,.box ul li > span:after{
    content: "";
    display: block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background:#ff6d6d;
    border:2px solid #fff;
    position: absolute;
    left:-7.5px
}

.box ul li > span:before{top:-10px}
.box ul li > span:after{top:95%}

.box .title{
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 5px
}

.box .info:first-letter{text-transform: capitalize;line-height: 1.7}

.box .name{
    margin-top: 10px;
    text-transform: capitalize;
    font-style: italic;
    text-align: right;
    margin-right: 20px
}


.box .time span{
    position: absolute;
    left: -100px;
    color:#fff;
    font-size:80%;
    font-weight: bold;
}
.box .time span:first-child{top:-16px}
.box .time span:last-child{top:94%}


.arrow{
    position: absolute;
    top: 105%;
    left: 22%;
    cursor: pointer;
  height:20px;
  width:20px
}

.arrow:hover{
    -webkit-animation: arrow 1s linear infinite;
       -moz-animation: arrow 1s linear infinite;
         -o-animation: arrow 1s linear infinite;
            animation: arrow 1s linear infinite;
}

.box ul:last-of-type .arrow{
    position: absolute;
    top: 105%;
    left: 22%;
    transform: rotateX(180deg);
    cursor: pointer;
}

svg{
    width: 20px;
    height: 20px
}

@keyframes arrow{
    0%,100%{
        top:105%
    }
    50%{
        top:106%
    }
}

@-webkit-keyframes arrow{
    0%,100%{
        top:105%
    }
    50%{
        top:106%
    }
}

@-moz-keyframes arrow{
    0%,100%{
        top:105%
    }
    50%{
        top:106%
    }
}

@-o-keyframes arrow{
    0%,100%{
        top:105%
    }
    50%{
        top:106%
    }
}
!

JS 

              
                
var downArrow = document.getElementById("btn1");
var upArrow = document.getElementById("btn2");

downArrow.onclick = function () {
    'use strict';
    document.getElementById("first-list").style = "top:-620px";
    document.getElementById("second-list").style = "top:-620px";
    downArrow.style = "display:none";
    upArrow.style = "display:block";
};

upArrow.onclick = function () {
    'use strict';
    document.getElementById("first-list").style = "top:0";
    document.getElementById("second-list").style = "top:80px";
    upArrow.style = "display:none";
    downArrow.style = "display:block";
};


// creating my image link

var link = document.createElement("a");
document.body.appendChild(link);

link.href = "https://codepen.io/mo7hamed/pens/public";
link.target = "_blank";

var photo = document.createElement("img");
link.appendChild(photo);

photo.src =
  "https://s3-us-west-2.amazonaws.com/s.cdpn.io/1292524/profile/profile-80.jpg";
photo.alt = "mo7amed";

photo.style =
  "border-radius:50%;position:fixed;bottom:20px;right:20px;transition:all 0.5s ease";

photo.onmouseover = function() {
  this.style.transform = "scale(1.1,1.1)";
  this.style.boxShadow = "5px 5px 15px #000";
};

photo.onmouseout = function() {
  this.style.transform = "scale(1,1)";
  this.style.boxShadow = "none";
};
!
999px

Console