body {

    font-family: 'Roboto', sans-serif;
    background-color: #f8fbfe;

}

* {
    margin: 0px;
    padding: 0px;
}

nav {
    display: flex;
    justify-content: space-around;
    background-color: #257cff;
    align-items: center;
    padding: 25px 0px;
    font-family: 'Roboto', sans-serif;
}

nav>div:nth-child(1)>a>h1 {
    font-size: 40px;
    font-weight: 900;
    text-decoration: none;
    color: white;
}
nav>div:nth-child(1)>a{
    text-decoration: none;
}

#nav-option>ul {
    display: flex;
    justify-content: space-evenly;
    align-items: center;

}

#nav-option>ul>li>a {
    text-decoration: none;
    color: white;
}

#nav-option>ul>li {
    list-style: none;
    margin: 0px 20px;
    font-size: 22px;
}

#nav-option>ul>li:nth-child(7)>a {
    background-color: white;
    color: #257cff;
    padding: 6px 25px;
    border-radius: 8px;

}
#nav-option>ul>li:nth-child(7)>a:hover{
    background-color: #184fa3;
    color: white;
}
 /* footer section */
 footer>div{
    display: flex;
    justify-content: space-evenly;

  }
  
  footer>div>div>ul>li{
    list-style: none;
    padding: 4px 0px;
  }
  footer>div>div>ul>li>a{
    text-decoration: none;
    color:grey;
    font-size: 20px;
    
  }
  footer>div>div>ul>li:nth-child(1){
    font-size: 24px;
    font-weight: 900;
    padding-bottom: 15px;
  }
  .copy-right{
    color: grey;
    text-align: center;
    margin-top: 11px;
    margin-bottom: 35px;
  }
  #top-section{
    margin-top: 50px;
    margin-bottom: 30px;
    text-align: center;
    color: grey;
  }
  #top-section>h1{
    font-size: 40px;
    margin-bottom: 20px;
  }
  #top-section>h2{
    margin-bottom: 20px;
  }
  #top-section>img:nth-child(1){
    margin-top: 30px;
  }
  
#exercise-section{
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 60px;
    width: 80%;
    margin: auto;
    margin-bottom: 100px;
    margin-top: 40px;
    
}
#exercise-section>div>div>img{
    width: 100%;
}
#exercise-section>div{
    text-align: center;
    box-shadow: rgba(0, 0, 0, 0.24) 0px 3px 8px;
    background-color: white;
    padding: 10px;

}
#filter-section{
    text-align: center;
    
}
#filter-section>select{
    width: 25%;
    font-size: 24px;
    margin: 20px 0px;
    text-align: center;
}
#sorting{
    text-align: center;
    
}
#sorting>select{
    width: 25%;
    font-size: 24px;
    margin: 20px 0px;
    text-align: center;
}
h1{
    text-align: center;
    color: grey;
}
#searching{
    text-align: center;
}
#searching>input{
    width: 25%;
    font-size: 22px;
    border:none;
    border-radius: 30px;
    padding: 9px 7px;
    border: 1px solid grey;
}