:root{
--footer-background-color: #f2f2f2;
--footer-text-color: #70757a;
--button-color: #f8f9fa;
--button-text-color: #3c4043;
--box-shadow-color: rgba(33,33,33,.2); 
}
*,
::before,
::after {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}
/*
Element selector
*/
html{
    font-size: 62.5%;
    height: 100%;
}
body{
    font-family: Roboto,aerial,sans-serif;
    font-size: 1.4rem;
    margin: 0px;
}
main{
    display : flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-top : 10rem;
    padding-bottom: 47px;   
}
ul{
    list-style : none;
}
li:hover{
    text-decoration: underline;
}
a{
    text-decoration : none;
    color : inherit;
}
img{
    display: block;
    
}
button{
    height: 36px;
    width: 140px;
    border : 1px solid var(--button-color);
    border-radius: 3px;
    margin-right: 10px; 
    background-color: var(--button-color);
    color: var(--button-text-color);
    text-align: center;
    font-family: roboto, aerial, sans-serif;
    font-size: 14px;
}
button:hover{
    cursor: pointer;
    border-color: #dadce0;
    box-shadow: 0px 0px 6px var(--box-shadow-color);
}
input{
    font-family: inherit;
    font-size: 16px;
}
input:focus{
    outline: none;
}
nav{
    display: flex;
    flex-direction: row;
    align-items: center;
    width : 100%;
    height: 60px;
    padding: 0.6rem 2.6rem;
}
footer{
    position: absolute;
    bottom: 0;
    left: 0;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 47px;
    padding: 0 35px;
    background-color: var(--footer-background-color);
}
/*
Class seletor
*/
.search-bar{
   margin-top: 3.8rem;
   padding: 0px 15px;
   width : 584px;
   height: 49px;
   border-radius : 25px;
   border : 1px solid lightgray;
   display : flex;
   align-items : center;
   justify-content : space-between;
}
.search-bar:hover{
    box-shadow: 0px 1px 6px var(--box-shadow-color);
}
.search-bar input{
    width : 80%;
    border: none;  
}
.search-bar .icon{
   height: 13px;
   width : 13px;
}
.search-bar .mic{
    height: 24px;
    width : 24px;
}
.search-bar .mic:hover{
    cursor: pointer;
}
.search-box{
    display: flex;
    flex-direction: row;
    width: 588px;
    height: 58px;
    margin-top : 1.8rem;
    align-items: center;
    justify-content: center;
}
nav .left-nav{
    display : flex;
    flex-direction : row;
    width : 100%;
    justify-content: flex-start;
    align-items: center;
}
.link{
    margin-right : 20px;
}
nav .right-nav{
    display : flex;
    flex-direction : row;
    
    width : 100%;
    justify-content: flex-end;
    align-items: center;
}
nav .right-nav .app-icon{
    width: 23px;
    height: 23px;
    opacity: 0.7;
    margin: 4px;
    border-radius: 50%;
}
nav .right-nav .app-icon:hover{
    background-color :rgb(235, 233, 233);
    box-shadow: 0px 0px 0px 10px rgb(235, 233, 233);
}
nav .right-nav .avatar-icon{
    width: 30px;
    height: 30px;
    border-radius: 50%;
}
nav .right-nav .distinct-font{
    font-family: aerial, sans-serif;
    font-size: 13px;
}
footer .left-footer{
    display: flex;
    flex-direction: row;
    width: 100%;
    justify-content: flex-start;
    align-items: center;
}
footer .right-footer{
    display : flex;
    flex-direction : row;
    width : 100%;
    justify-content: flex-end;
    align-items: center;
} 
footer li{
    color : var(--footer-text-color);
}