header{
  padding: 10px 25px;

  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 50px;    
  border-bottom:solid 2px var(--main-brand-color);
}
.header_text{
  width: 750px;
}
nav{
  margin-bottom: 120px;
}
nav ul {
  list-style-type: "> ";
  display: flex;
  gap: 20px;
}
::marker {
  color: var(--main-brand-color);
}
nav a{
  color: var(--main-brand-color);
  text-decoration: none;
  position: relative;
  padding: 3px;
}
nav a:hover{
  color: var(--text-color);
}
nav a::after{
  content: '';
  height: 2px;
  width: 0%;
  background: var(--main-brand-color);
  position: absolute;
  bottom: 0;
  left: 0;
  transition: 150ms ease-in-out;
} 
nav a:hover::after{
  width: 100%;
}
.subheading{
  margin-top: 25px;
  color: var(--secondary-text-color);
}
.circle{
  margin: 0px;
  height: 400px;
  width: 400px;

  max-height: 80vw;
  max-width: 80vw;

  overflow: hidden;
  border-radius: 50%;
  border: 5px solid var(--main-brand-color);

  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: rgb(0, 0, 0) 0px 2px 4px 0px, rgb(0, 0, 0) 0px 2px 16px 0px;
}
.circle img{
  width: 100%;
}
#toggle_button{
  display: none;
}
label[for="toggle_button"]{
  display: none;
}
label[for="toggle_button"] span{
  font-size: 40px;
}
@media(max-width: 800px){
  nav{
      position: fixed;
      top: 0;
      left: 0;
      background: var(--secondary-color);
      padding: 5px 10px 0px 10px;
      border-radius: 0 0 25px 0;
      border-bottom:solid 2px var(--main-brand-color);
      border-right:solid 2px var(--main-brand-color);
      opacity: 0.9;
      box-shadow: rgb(0, 0, 0) 0px 2px 3px;
  }
  nav ul{
      display: none;
      flex-direction: column;
      gap: 0px;
  }
  label[for="toggle_button"]{
      display: block;
  }
  #toggle_button:checked ~ ul{
      display: flex;
  }
  .circle{
    height: 300px;
    width: 300px;
    margin-top: -40px;
    max-height: 80vw;
    max-width: 80vw;
  
    overflow: hidden;
    border-radius: 50%;
    border: 5px solid var(--main-brand-color);
  
    display: flex;
    justify-content: center;
    align-items: center;
  }
  h1{
    margin-top: 40px;
  }
  .subheading{
    margin-top: 5px;
  }
}