style.css

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@600&family=Roboto+Mono:wght@700&display=swap');
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: #09090a;
  color: #cecece;
  height: 100vh;
}

header {
  position: fixed;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: #09090a;
  padding: 3rem;
  gap: 1rem;
}

button {
  padding: 1rem 1.5rem;
  border-radius: 0.5rem;
  border: 1px solid #5cf661;
  background-color: transparent;
  color: #cecece;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  line-height: 125%;
}

#form-habits {
  display: flex;
  padding: 11rem 3rem 3rem;
  width: fit-content;
}
.habits {
  display: flex;
  flex-direction: column;
  margin-top: 3.5rem;
  gap: 1.5rem;
}
.habit {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  font-size: 2rem;
}
.days {
  display: flex;
  margin-left: 2rem;
  gap: 2.5rem;
}

.day {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.day div {
  text-align: center;
  margin-bottom: 0.5rem;
  font-family: 'Roboto Mono', 'Consolas';
  font-size: 1.25rem;
  line-height: 125%;
  color: #a1a1a1aa;
}

input {
  -webkit-appearance: none;
  appearance: none;
  width: 4rem;
  height: 4rem;
  border: 2px solid #27272a;
  border-radius: 0.5rem;
  background: #18181b;
}

input:checked {
  background: #5cf65c;
  border: 2px solid #b5fdbe;
}

@media (max-width: 570px) {
  button p {
    display: none;
  }
}