* {box-sizing: border-box;}
  
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

.header a {
  float: left;
  color: black;
  text-align: center;
  padding: 15px;
  text-decoration: none;
  font-size: 18px; 
  line-height: 25px;
  border-radius: 4px;
}

.header a.logo {
  font-size: 25px;
  font-weight: bold;
}


.header-right {
  float: right;
}

@media screen and (max-width: 500px) {
  .header a {
    float: none;
    display: block;
    text-align: left;
  }
  
  .header-right {
    float: none;
  }
}


.topnav {
  overflow: hidden;
  background-color: #333;
}

.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  text-decoration: none;

  
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.topnav a.active {
  background-color: #d44e06;
  color: white;
}

.topnav .icon {
  display: none;
}

.center {
  text-align: center;
  justify-content: center;
}

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child) {display: none;}
  .topnav a.icon {
    float: left;
    display: block;
  }

  .center {
    text-align: center;
    justify-content: center;
  }

  .imgsvg{
    width: 380px;
    
  }

}

@media screen and (max-width: 600px) {
  .topnav.responsive {position: relative;}
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }

}