Ниже представлен полный HTML-код страницы справочника, подготовленный в соответствии с вашими требованиями. Он содержит структурированное объяснение, алгоритм, примеры и советы для родителей по теме деления смешанного числа на целое.
«`html

body {
font-family: ‘Segoe UI’, Tahoma, Geneva, Verdana, sans-serif;
background-color:

f8f9fc;

margin: 0;
padding: 20px;
color:

1e293b;

}
.container {
max-width: 1000px;
margin: 0 auto;
background: white;
border-radius: 24px;
box-shadow: 0 10px 30px rgba(0,0,0,0.08);
padding: 30px 35px;
}
h1 {
font-size: 2.2rem;
font-weight: 700;
color:

0f172a;

border-left: 8px solid

3b82f6;

padding-left: 20px;
margin-top: 0;
margin-bottom: 30px;
}
h2 {
font-size: 1.6rem;
font-weight: 600;
margin-top: 40px;
margin-bottom: 15px;
color:

1e293b;

border-bottom: 2px solid

e2e8f0;

padding-bottom: 8px;
}
h3 {
font-size: 1.3rem;
font-weight: 600;
margin-top: 25px;
margin-bottom: 10px;
color:

334155;

}
p {
line-height: 1.6;
margin: 0 0 15px 0;
font-size: 1.05rem;
}
ul, ol {
padding-left: 25px;
margin-bottom: 20px;
}
li {
margin-bottom: 8px;
font-size: 1.05rem;
}
.analogy-box {
background:

eff6ff;

border-left: 6px solid

3b82f6;

padding: 18px 22px;
border-radius: 16px;
margin: 20px 0;
}
.step-list {
background:

f1f5f9;

padding: 20px 25px;
border-radius: 20px;
list-style-type: none;
counter-reset: step-counter;
}
.step-list li {
counter-increment: step-counter;
margin-bottom: 14px;
padding-left: 45px;
position: relative;
font-weight: 500;
}
.step-list li::before {
content: counter(step-counter);
background:

3b82f6;

color: white;
font-weight: 700;
width: 30px;
height: 30px;
border-radius: 50%;
display: inline-flex;
align-items: center;
justify-content: center;
position: absolute;
left: 0;
top: -2px;
font-size: 0.9rem;
}
.shpargalka-table {
width: 100%;
border-collapse: collapse;
margin: 20px 0;
font-size: 1.05rem;
background:

f8fafc;

border-radius: 16px;
overflow: hidden;
box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.shpargalka-table th {
background:

1e293b;

color: white;
padding: 14px 18px;
text-align: left;
font-weight: 600;
}
.shpargalka-table td {
padding: 14px 18px;
border-bottom: 1px solid

e2e8f0;

}
.shpargalka-table tr:last-child td {
border-bottom: none;
}
.shpargalka-table .formula-cell {
font-family: ‘Courier New’, monospace;
font-weight: 600;
background:

f1f5f9;

}
.example-block {
background:

ffffff;

border: 1px solid

e2e8f0;

border-radius: 20px;
padding: 20px 25px;
margin: 20px 0;
box-shadow: 0 2px 6px rgba(0,0,0,0.02);
}
.example-block p {
margin-bottom: 8px;
}
.example-block .solution {
background:

f8fafc;

padding: 12px 18px;
border-radius: 12px;
font-family: ‘Courier New’, monospace;
margin-top: 8px;
border-left: 4px solid

3b82f6;

}
.star {
color:

f59e0b;

font-weight: 700;
margin-right: 6px;
}
.parents-box {
background:

ecfdf5;

border-left: 6px solid

10b981;

padding: 18px 22px;
border-radius: 16px;
margin: 20px 0;
}
.errors-box {
background:

fef2f2;

border-left: 6px solid

ef4444;

padding: 18px 22px;
border-radius: 16px;
margin: 20px 0;
}
.errors-box li {
font-weight: 500;
}
.conclusion {
margin-top: 40px;
padding: 20px 0 10px;
border-top: 2px dashed

cbd5e1;

font-style: italic;
color:

475569;

}
.math-symbol {
font-family: ‘Times New Roman’, serif;
font-size: 1.2rem;
}
.frac {
display: inline-block;
vertical-align: middle;
text-align: center;
margin: 0 4px;
}
.frac .num {
display: block;
border-bottom: 2px solid

1e293b;

padding: 0 6px 2px;
font-size: 0.95rem;
}
.frac .den {
display: block;
padding: 2px 6px 0;
font-size: 0.95rem;
}

«`