From 6e70f28ccbd5afc1506f71f013278a9d157ef03a Mon Sep 17 00:00:00 2001
From: Prefetch
Date: Thu, 27 Oct 2022 20:40:09 +0200
Subject: Optimize last images, add proof template, improve CSS

---
 source/know/concept/euler-bernoulli-law/index.md | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

(limited to 'source/know/concept/euler-bernoulli-law/index.md')

diff --git a/source/know/concept/euler-bernoulli-law/index.md b/source/know/concept/euler-bernoulli-law/index.md
index dad67ca..5a6c38d 100644
--- a/source/know/concept/euler-bernoulli-law/index.md
+++ b/source/know/concept/euler-bernoulli-law/index.md
@@ -81,11 +81,8 @@ $$\begin{aligned}
     }
 \end{aligned}$$
 
-<div class="accordion">
-<input type="checkbox" id="proof-field"/>
-<label for="proof-field">Proof</label>
-<div class="hidden" markdown="1">
-<label for="proof-field">Proof.</label>
+
+{% include proof/start.html id="proof-field" -%}
 By integrating the above strains $$u_{ii} = \ipdv{u_i}{i}$$,
 we get the components of $$\va{u}$$:
 
@@ -171,8 +168,8 @@ $$\begin{aligned}
 
 Inserting this into the components $$u_x$$, $$u_y$$ and $$u_z$$
 then yields the full displacement field.
-</div>
-</div>
+{% include proof/end.html id="proof-field" %}
+
 
 In any case, the beam experiences a bending torque with an $$x$$-component $$T_x$$ given by:
 
-- 
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