body{
    margin: 0px;
    background-color: #37bda6;
}
main{
    margin-left: 10%;
    margin-right: 10%;
    text-align: left;
    font-family: sans-serif;
    font-size: 20px;
}
h1{
    text-align: center; font-family: sans-serif;
}
.navbar ul{
    list-style-type: none;
    background-color: grey;
    width: 100vw;
    padding: 0px;
    margin: 0px;
    overflow: hidden;
}
.navbar a{
    color: white;
    text-decoration: none;
    padding: 0px;
    display: block;
    text-align: center;
}
.navbar a:hover{
    background-color: hsl(0, 0%, 10%);
}
.navbar li{
    float: left;
    padding: 1%;
}

.navbar ul{
  display: flex;
  justify-content: space-around;
}

.gallery{
    display: inline-block;
    border: 1px solid hsl(0, 0%, 60%);
    margin: 5px;
    width: 300px;
}

.gallery:hover{
    border: 1px solid hsl(0, 0%, 20%);
}
.gallery img{
    width: 100%;
    height: auto;
}