styles.css

:root {
  --main-bg-color: #282c34;
  --main-text-color: #FAFAFA;
  --secondary-bg-color: #4c516d;
  --highlight-color: #61dafb;
  --button-bg-color: #007acc;
}

* {
  box-sizing: border-box;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--main-bg-color);
  color: var(--main-text-color);
  font-family: 'Ropa Sans', sans-serif;
  margin: 0;
  overflow: auto;
  width: 100%;
  min-height: 100vh;
  transition: all 0.25s linear;
}

#wrapper {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

#intro {
  margin-top: 7px;
  min-height: 5vh;
}

.slider {
  text-align: center;
  overflow: hidden;
}

.exercises {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
  padding: 2rem;
  background-color: var(--secondary-bg-color);
  border-radius: 10px;
  justify-content: center;
}

.exercises>div {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.button-64 {
  align-self: center;
  background-color: var(--button-bg-color);
  box-shadow: rgba(0, 0, 0, 0.3) 0px 19px 38px, rgba(0, 0, 0, 0.22) 0px 15px 12px;
  border: none;
  border-radius: 5px;
  color: #FFFFFF;
  padding: 1rem 2rem;
  cursor: pointer;
  transition: all 0.3s ease-out;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.button-64:hover {
  background-color: var(--highlight-color);
}

@media (min-width: 768px) {
  .button-64 {
    font-size: 1.25rem;
  }
}