deep dive

by trentHarlem

HTML

<div id="section1">
<h2>Section 1 (surface)</h2>
<div id="myBoat">
<h3 id="myBoatHeader">
<•_BOAT_•>
</h3>
<p><button class="dive">Dive</button></p>

  <a href="#section2" class="dive fff">vvv DOWN vvv</a>
  </div>
<div class="high dive">
</div>
</div>  
  <div id="section2">
  <h2>Section 2 (floor)</h2>
   <a href="#section1" class="fff">^^^ UP ^^^</a>
</div>

CSS

body {
  background: linear-gradient(dodgerblue, midnightblue);
  scroll-behavior: smooth;
    transition: all 4s ease-in;
  
}

#section1 h2 {
  background-color: transparent;
  text-shadow: 5px 5px 20px #ffffff55;
}
.high {
  height: 1500px;
  transition: all 2s ease-in;
}

.dive:focus {
    	
    	-webkit-animation-name: dive;
    	-webkit-animation-duration: 11s;
    	-webkit-animation-iteration-count: once;
    	-webkit-animation-direction: down;
    	-webkit-animation-timing-function: linear;
    }
    
    /* #box:hover {
      -webkit-animation-play-state: paused;
    } */
    
    @-webkit-keyframes dive {
    	0% {
    		margin-top: 0px;
    	}
    	50% {
    		margin-top: 1500px;
    	}
      	100% {
    		margin-top: 0px;
    	}
    }
    
#section2{
      height: 100px;
      color: whitesmoke;
      margin-bottom: 30px;
    }
    
#myBoat {
  position: absolute;
  width: 120px;
  text-align: center;
}  
#myBoatHeader {
  padding: 10px;
  cursor: move;
  background-color: brown;
  color: #fff;  
}

#myBoatHeader:hover {
  box-shadow: 0px 5px 25px #ffffff55;
}

.fff {
  color: #fff;
}

button {
  cursor: grab;
}

JavaScript

//Make the DIV element draggagle:
dragElement(document.getElementById("myBoat"));

function dragElement(elmnt) {
  var pos1 = 0, pos2 = 0, pos3 = 0, pos4 = 0;
  if (document.getElementById(elmnt.id + "Header")) {
    /* if present, the header is where you move the DIV from:*/
    document.getElementById(elmnt.id + "Header").onmousedown = dragMouseDown;
  } else {
    /* otherwise, move the DIV from anywhere inside the DIV:*/
    elmnt.onmousedown = dragMouseDown;
  }

  function dragMouseDown(e) {
    e = e || window.event;
    e.preventDefault();
    // get the mouse cursor position at startup:
    pos3 = e.clientX;
    pos4 = e.clientY;
    document.onmouseup = closeDragElement;
    // call a function whenever the cursor moves:
    document.onmousemove = elementDrag;
  }

  function elementDrag(e) {
    e = e || window.event;
    e.preventDefault();
    // calculate the new cursor position:
    pos1 = pos3 - e.clientX;
    pos2 = pos4 - e.clientY;
    pos3 = e.clientX;
    pos4 = e.clientY;
    // set the element's new position:
    elmnt.style.top = (elmnt.offsetTop - pos2) + "px";
    elmnt.style.left = (elmnt.offsetLeft - pos1) + "px";
  }

  function closeDragElement() {
    /* stop moving when mouse button is released:*/
    document.onmouseup = null;
    document.onmousemove = null;
  }
}