:root {
   --color-blue: #0054a9;
}

html {
    box-sizing: border-box;
}

*, *:before, *:after {
    box-sizing: inherit;
}

body, html {
    margin: 0;
    padding: 0;
}

body {
    font-size: 1.1em;
    font-family: Helvetica, Arial, sans-serif;
}


input[type="submit"], button, a.button {
    background-color: var(--color-blue);
    border: 2px solid var(--color-blue);
    display: block;
    font-weight: bold;
    font-size: 18px;
    color: white;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    text-decoration: none;
}

input[type="submit"]:hover, button:hover,  a.button:hover {
    background-color: #fff;
    color:#052c52;
    border-color: var(--color-blue);
}

label {
    display: block;
    font-weight: 700;
}

input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
    color: #25265e;
    font-size: 16px;
    line-height: 24px;
}

input[type=text], input[type=email], input[type=password], input[type=number], select, input[type=file] {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    margin: 8px 0px 20px;
    outline-color: var(--color-blue);
}

details {
    border: solid 1px hsl(240 5.9% 90%);
}

details > summary:first-of-type {
    display: flex;
    position: relative;
    align-items: center;
    border-radius: inherit;
    padding: 1rem;
    user-select: none;
    cursor: pointer;
}

details > *:not(summary) {
    padding: 1rem;
}

summary::after {
    position: absolute;
    right: 1rem;
    padding-right: .25rem;
    content: '+ ';  /* Instead of Triangle closed */
}

details[open] > summary:first-of-type {
     background-color: var(--color-blue);
     color: #fff;
}
details[open] summary::after {
  content: '- '; /* Instead of Triangle open */
}