body {
    background-color: #ffc5e6;
    padding: 0 10px 10px

}

.container {
    max-width: 1000px;
    margin: 0 auto;
}

.greetings {
    border: 2px solid #fff;
    border-radius: 25px 0 25px 0;
    padding: 10px;
    margin-top: 20px;
    background-color: #fff;
    box-shadow: 7px 7px 7px rgba(0, 0, 0, 0.15), inset -7px -7px 12px rgba(255, 255, 255, 0.9);
    position: relative;
}

.greetings h1 {
    text-align: center;
    font-size: 40px;
    line-height: 1.2;
    font-weight: 700;
    margin: 0;
    color: #ff2644;
}

/* Hide checkbox */
#toggle-letter {
  display: none;
}

/* Button */
.letter-btn {
  display: block;
  text-align: center;
  font-weight: 600;
  cursor: pointer;
  margin: 20px auto;
  padding: 12px;
  border-radius: 12px;
  background: #f2f2f2;
  box-shadow:
    4px 4px 8px rgba(0,0,0,0.15),
    -4px -4px 8px rgba(255,255,255,0.9);
    max-width: 600px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.letter-btn:hover {
  background: #ffc5e640;
  box-shadow: 0 0 15px rgba(255,0,0,0.6);
}

/* Letter box */
.letter {
  background: #f2f2f2;
  border-radius: 25px 0 25px 0;
  box-shadow:
    inset 4px 4px 8px rgba(0,0,0,0.15),
    inset -4px -4px 8px rgba(255,255,255,0.9);

  overflow: hidden;

  /* Scroll-like closed state */
  max-height: 0;
  padding: 0 20px;

  opacity: 0;
  transform: scaleY(0);
  transform-origin: top;

  transition:
    max-height 1s cubic-bezier(0.4, 0, 0.2, 1),
    transform 1s cubic-bezier(0.22, 1.2, 0.36, 1),
    opacity 1s ease,
    padding 1s ease;
}



#toggle-letter:checked ~ .letter {
  max-height: 1800px; /* must be taller than your letter */
  padding: 20px;

  opacity: 1;
  transform: scaleY(1);
}


.letter {
  opacity: 0;
}

#toggle-letter:checked ~ .letter {
  opacity: 1;
  transition: 1s ease-in-out;
}

.letter p {
    font-size: 20px;
    line-height: 1.2;
    font-family: "Cedarville Cursive", cursive;
}

img.img-01 {
    max-width: 300px;
    float: right;
}

@media (max-width: 650px) {
  img.img-01 {
    max-width: 200px;
    float: right;
}
}

@media (max-width: 450px) {
  img.img-01 {
    max-width: 100px;
    float: right;
}
}