body {
    font-family: "Museo Slab 300";
}

div,
input,
textarea {
    box-sizing: border-box;
}

.main {
    text-align: center;
}

.page-title {
    font-family: "Museo Slab 100";
    font-size: 50px;
    padding: 30px;
}

.tree {
    text-align: left;
    padding: 10px;
}

.leaf {
    padding: 5px 0px;
}

input {
    border: 1px solid black;
}

input.problem {
    background: pink;
}

input.player {
    background: lightblue;
}

input.why {
    background: lightgreen;
}

input.proposal {
    background: plum;
}

.sub {
    display: inline-block;
    border-style: solid;
    border-color: black;
    border-width: 1px 0px;
    vertical-align: middle;
    padding: 0px 10px;
    background: rgba(0,0,0,0.1);
}

.children {
    display: inline-block;
}

.cell {
    display: inline-block;
    vertical-align: middle;
}

.cell input {
    padding: 5px;
    width: 250px
}

.arrow {
    display: inline-block;
}

.options,
.options-instr {
    text-align: right;
    padding-right: 2px;
}

.option-btn {
    text-align: center;
    cursor: pointer;
    display: inline-block;
    margin: 0px;
}

.options .option-btn {
    padding: 3px 20px;
}

.options-instr .option-btn {
    padding: 3px;
}

.options-instr-text {
    font-size: 10px;
}

.remove {
    background: coral;
}

.add {
    background: khaki;
}

.sample-btn {
    padding: 3px 20px;
    border-radius: 10px;
    text-align: center;
    cursor: pointer;
    display: inline-block;
    margin: 5px;
    color: white;
    background: orange;
}

.sample-btn.current {
    background: coral;
}

.tools-btns {
    text-align: center;
    margin-top: 20px;
}

.tools-btn {
    display: inline-block;
    padding: 5px;
    color: cornflowerblue;
    cursor: pointer;
    border: 1px solid cornflowerblue;
}

.tools-btn.left {
    border-radius: 10px 0px 0px 10px;
}

.tools-btn.right {
    border-radius: 0px 10px 10px 0px;
}

.tools-btn.active {
    background: cornflowerblue;
    color: white;
}