* {
  margin: 0;
  padding: 0;
}

html {
  box-sizing: border-box;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  background-image: url("bckg.png");
  color: #fff;
  font-size: 1.3em;
}

.link {
  color: #000;
  text-decoration: inherit;
  font-style: italic;
  color: #fff;
  cursor: pointer;

}

.container {
  max-width: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.container > * {
  margin-bottom: 3rem;
}

.exercises {
  max-width: 350px;
  max-height: 500px;
  background: rgba(0, 0, 0, 0.3);
  box-shadow: 0 0 0 10px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  overflow-y: scroll;
  text-align: left;
}

.exercises .link:hover {
    background: rgba(0, 0, 0, 0.4);
}

.exercises > * {
  padding: 0.7rem 1rem;
}

::-webkit-scrollbar {
  width: 10px;
}
  
::-webkit-scrollbar-track {
  background: #f1f1f1; 
}
   
::-webkit-scrollbar-thumb {
  background: #888; 
}
  
::-webkit-scrollbar-thumb:hover {
  background: #555; 
}

@media (max-width: 1600px) {
  .exercises {
    max-height: 400px;
  }
}