html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}

body {
    background-color: #f5f5f5;
}

.titulo {
    color: black;
    text-align: center;
}

.img-hover {
    width: 300px;
    transition: transform 0.3s;
    border-radius: 10px;
}

    .img-hover:hover {
        transform: scale(1.2);
    }


form {
    max-width: 400px;
    display: flex;
    flex-direction: column;
}

body {
    color: white;
}

.fondo {
    background-color: #e14242;
}

<style >
.imagen-grande {
    width: 400px; 
    height: auto; 
}


.imagen-grande:hover {
    transform: scale(1.2); 
    transition: transform 0.3s ease;
}

</style >

#caja {
    width: 100px;
    height: 100px;
    background-color: white;
    position: relative;
}

#caja {
    position: relative;
}

button {
    margin: 10px;
    padding: 10px;
}

#panel {
    display: none;
    background-color: black;
    padding: 15px;
    margin-top: 10px;
}