body, h1, h2, h3, p, div, ol, ul, li {
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
}

h1, h2, p {
    margin: 8px 0px;
}

h1 {
    margin-bottom: 15px;
    text-align: center;
}

body {
    background-color: #f5f5f5;
    color: #333;
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    max-width: 900px;
    padding: 0px 5px 0px 5px;
    margin-left: auto;
    margin-right: auto;
    overflow: auto;
    height: 100%;
}

.language, .formulas, .insert-symbols, .resolution {
    width: 100%;
    margin-top: 10px;
    margin-bottom: 10px;
}

.language-input, .formula-input, .steps-input {
    width: 100%;
    padding: 4 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin: 5 0px;
}

.language-input, .steps-input {
    display: inline-block;
    width: calc(25% - 15px);
    min-width: 100px;
    margin: 2px 8px 2px 0px;
}

.steps-input {
    display: inline-block;
    width: calc(10% - 15px);
    min-width: 50px;
    margin: 2px 8px 2px 0px;
}

.label {
    font-weight: bold;
    margin: 5px 0px;
}

.formulas-insert-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    width: 100%;
}

.formula-column {
    flex: 1;
    padding: 0px 5px 0px 0px;
}

.insert-column {
    flex: 1;
    padding: 0px 0px 0px 5px;
}

.error {
    color: #e74c3c;
    font-size: 12px;
    margin: 2px 0px;
}

button {
    background-color: initial;
    background-image: linear-gradient(-180deg, #00D775, #00BD68);
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 5px 10px;
    cursor: pointer;
    margin: 5px 5px 5px 0px;
}

button:hover {
  background: #00bd68;
}

.result {
    margin-top: 20px;
}

.formula-transformation {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-bottom: 5px;
    margin-top: 5px;
    clear: both;
}

.resolution-step {
    padding: 10px;
    margin-bottom: 5px;
    margin-top: 5px;
    clear: both;
}

.single-transformation {
    margin: 5px 0px;
}

.formula, .res-step {
    float: right;
    font-weight: bold;
}