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    </g>
</svg>
    <input id='field-search' type='text'>
  </div>
  <strong class='smile'>:)</strong>
</div>
!

CSS 

              
                *, *:after, *:before{
  margin: 0;
  padding: 0;
}
body,html{
  font-size: 16px;
  font-family; arial;
}
#container,
#wrapper_search{
  display: flex;
}
#container{
  background-color: orangered;
  width: 100vw;
  height: 100vh;
  justify-content: center;
  align-items: center;
}
#wrapper_search{
  background-color:white;
  border-radius: 7px;
  padding: 5px
}
#wrapper_search input{
  padding: 2px 4px 2px 44px;
  font-size:17px;
  color: #251D3A;
  font-weight: 700;
  width: 186px;
  border:none;
  outline: none;
  margin-left: -223px;
  background-color: transparent;
}

#icon-search circle,
#icon-search rect{
  transition: all .65s ease-out;
}
#icon-search.focus circle,
#icon-search.focus rect{
  transition: all .65s ease-in;
}
#icon-search.focus circle{
  stroke-width: 10!important;
}

#icon-search.focus rect{
  width: 10px!important;
}

path{
  transition: all .25s ease-in;
  transform:rotateZ(0) translateY(0);
}
.hide path{
  opacity: 0;
  transition: all .35s ease-out;
  transform: rotateZ(4deg) translateY(13px) ;
}
.hide path:nth-child(2n-1){
  transform:translateY(-13px);
}
.smile{
  font-weight: 700;
  font-size: 35px;
  color: #251D3A;
  transform: rotate(90deg) translateY(-20px)
}
!

JS 

              
                
let el_placeholder = document.getElementById('el-placeholder');

let input_search = document
.getElementById("field-search");

let icon_search = document
.getElementById('icon-search');

let focusInput = (el) =>{
  if(el.target.value == ""){
   el_placeholder
     .classList.toggle('hide');  
    icon_search
    .classList.toggle('focus');
  } 
}

input_search.addEventListener(
  'focus',
  focusInput
);

input_search.addEventListener(
  'blur',
  focusInput
);
!
999px

Console